Postman Beginner's Course - API Testing

Postman has over 10 million users worldwide. This course will introduce you to Postman and is suited for beginners. You will learn how to build API requests with Postman, how to inspect responses and create workflows.
The second part of the course will get into the most exciting feature of Postman: writing API tests and automating their execution. You will learn about the collection runner, Postman monitors and Newman.
You will get hands-on experience and will have plenty opportunities to practice. The best way to learn is by doing the assignments.
📚 Course Notes: github.com/vdespa/introductio...
🎥 Course created by Valentin Despa, Developer Educator
🐦 Valentin on Twitter: @vdespa
📺 Valentin on KZbin: / @vdespa
⭐️ Course Contents ⭐️
⭐️ Unit 1 - Introduction to Postman
⌨️ Lesson 1 - Welcome (0:00:00​)
⌨️ Lesson 2 - What is Postman (0:01:12​)
⌨️ Lesson 3 - How to install Postman (0:03:06​)
⌨️ Lesson 4 - Your first request with Postman (0:04:45​)
⌨️ Lesson 5 - HTTP (0:07:07​)
⌨️ Lesson 6 - Postman collections and variables (0:11:10​)
⌨️ Lesson 7 - Query parameters (0:15:55​)
⌨️ Lesson 8 - Assignment (0:22:50​)
⌨️ Lesson 9 - Path variables (0:25:21)
⌨️ Lesson 10 - POST request / API Authentication (0:30:07)
⌨️ Lesson 11 - JSON format (0:41:21)
⌨️ Lesson 12 - Assignment (0:45:11)
⌨️ Lesson 13 - Random test data (0:47:32)
⌨️ Lesson 14 - Is Postman the right tool for me? (0:50:59)
⌨️ Lesson 15 - Viewing existing orders (0:52:16)
⌨️ Lesson 16 - Assignment (0:53:59)
⌨️ Lesson 17 - PATCH request (0:55:56)
⌨️ Lesson 18 - DELETE request (0:59:03)
⭐️ Unit 2 - Test automation with Postman
⌨️ Lesson 19 - Introduction to test automation (1:01:52)
⌨️ Lesson 20 - Your first API tests (1:02:52​)
⌨️ Lesson 21 - Assignment (1:14:55)
⌨️ Lesson 22 - Postman variables (1:19:20)
⌨️ Lesson 23 - Extracting data from the response (1:24:13)
⌨️ Lesson 24 - Assignment (1:36:51)
⌨️ Lesson 25 - Assignment (1:38:08)
⌨️ Lesson 26 - Collection runner (1:42:52)
⌨️ Lesson 27 - Request execution order (1:49:00)
⌨️ Lesson 28 - Postman monitors (1:53:32)
⌨️ Lesson 29 - Newman (1:57:45)
⌨️ Lesson 30 - HTML reports with Newman (2:01:58)
⌨️ Lesson 30 - CI/CD overview (2:05:28)
⌨️ Lesson 31 - Conclusion (2:08:24)
Check out free Postman programs for students and educators to help you learn more about APIs: www.postman.com/company/stude...
Learn to code for free and get a developer job: www.freecodecamp.org​
Read hundreds of articles on programming: www.freecodecamp.org​/news

[@hugooguh8899]

Sometimes I can not believe that there are people who spend days to make such great educational videos are generous enough to host them for free on KZbin. Thank you so much for all the work you did to make this video

[@vdespa]

I am glad you appreciate the effort behind educational videos. Thanks for watching.

[@symfoniatragic]

@@vdespa Lots of thanks indeed. I usually can not believe too, as Hugo beautifully noted.

[@dmz140]

Yes! Thank you! I am learning so much!

[@indrit66]

he does it for money bro

[@trevorribbans2256]

I've always thought the same thing. Especially people with small accounts making $0 from it, teaching you to fix your car or something with no intention of making money off youtube, just trying to help people

[@shalinisil9214]

First thing, " Change it to the black theme" . This is our hero!

[@tareqmonwer6494]

Felt the same emotion lol :P

[@dre9973]

I paused and immediately liked the video when he said that.

[@renebraun1313]

For sure, with normal theme, you can't see anything. Does not matter wich OS.

[@anuranbhattacharya9938]

As a QA automation engineer, I purposely keep it in light theme, since developers keep it dark. Archenemies:)

[@Perky143247]

😂😂

[@nehayagnesh6179]

Valentin, appreciate all your hard work in creating this course. It's really helpful. Thanks a ton!

[@albertoruiz1961]

Thank you, this covers a lot of things but the way you split it out makes it more manageable

[@AkshayHarith]

I truly enjoyed going through this tutorial! I had some basic knowledge about testing APIs in Postman. But this video just brought a whole new dimension to it.

[@ashish_yadav542]

Explained in the most simple manner. Went through everything step by step and in a very structured format.

[@conangoinham]

This is such an incredible video that covers the fundamentals of API testing through Postman. Your pacing, amount of detail per each segment, and practice assignments were all spot-on. Looking forward to watching more of your content and truly appreciate the hard work to help others grow.

[@vdespa]

Thank you for your kind words, Chris!

[@kristinemarkarova794]

This is literally everything I needed. I've spent a week trying to find any good course in online platforms and now I'm watching the best one for free.

[@vdespa]

Great to hear that, Kristine!

[@BhaylaPawara]

really?

[@githinjibonface8486]

This tutorial is great. I love the way the tutor teaches in a slow way.

[@ivyunhinged9521]

I just got a new job task involving postman and then you drop this!!!!! I already love you guys, give me a breather here.

[@fanawopopamilerin1950]

Everything about this tutorial makes so much meaning each time I come back to watch. I'm still on my job, thanks to you.

[@adelfors]

A big THX and applause to You Valentin👏. This was an amazing tutorial experience : Clear structured, pointing to the highlights, very valuable handling tips to avoid errors...

[@user-qh5qo2tr7l]

Thank you very much for your course. Everything is very well thought out, neat and interesting. Very good balance between theory and practice, the need to write documentation has never been so convincing. Good luck and good code!

[@LuisReyes-th6fg]

Excellent Beginners course Valentin. This has helped me gained more knowledge on features I was not aware of and helped solidify the existing knowledge I did have. You presented this in a way that was logical and easy to understand. I will be looking for more of your videos.

[@saqibnawaz6311]

As a automation engineer i was finding tutorial like this and finally I got this one. Your explanation is more than awesome. More power to you and this channel 🙏🏻💯

[@FreeStyleKid777]

Amazing tutorial! 1st time Postman user, with the only knowledge of JS being variables and functions, and managed to understand it perfectly fine. Honestly, this should be no. 1 in the Postman tutorials globally. Seriously! Simply perfect, straight forward, no BS, intro Postman for beginners. P.S. They reintroduced the "Run collection" option in the collection Drop menu in v. 10.17.2

[@datacreed]

Mar 2021: I dabbled with Postman a few years ago with no guidance, so this video certainly sets a good direction for further learning. Thank You!

[@fredpena5265]

An outstanding course !!! A must-watch for anyone starting with postman. It's clear, concise and has very bright assignments to practice and check your understanding. A big "BRAVO" and many, many thanks to Valentin.

[@vdespa]

Thank you for your kind words, Fred! I'm glad that the course was able to provide you with the knowledge and skills you needed to get started with Postman. If you have any further questions or need additional guidance, please don't hesitate to ask.

[@dobrinstefanov2372]

This was the best educational video that I have ever watched in KZbin - so nicely and fully explained with examples and tasks, with no rush and calm tone all the time. Thank you very, very much for the efforts to share your knowledge with us!

[@tonyhomfray]

Awesome training! Really well structured and paced - thanks man!

[@iqraarif1109]

I did not want to leave any comments as I was being lazy. Then I thought about how much I learnt from this tutorial and the effort you put in, for free. Thank you so much.

[@beatrizguedes3791]

I've been looking for a good Postman course for so long and this is the best one! Especially because it also teaches the automation fundamentals, no just Postman features. Thank you so much Valentin! =)

[@vdespa]

You're welcome, enjoy! 🚀

[@BhaylaPawara]

oh no

[@AudunWangen]

I love Postman. I’ve used it with the Microsoft Teams API. It was so intuitive that I managed to understand queries, variables, body and parameters without any training or documentation. I just knew how APIs work, and that was enough. You can even get the code for fetching that data in many different programming languages like PHP, Bash with curl or Perl. That saved me a lot of time.

[@HarpreetSingh-zf4sy]

Just paused the video midway and came to comment here...clearly shows how much I appreciated the content ...Kudos to the instructor..Good Job!!

[@anjevalina]

Hi Valentin, Saurav , Pradeep. The course is just awesome! The structure is clean and the content is divided into the right size "portions" that are simple to follow. The assignments are really helpful. The presenter talks not too fast and not too slow and with no "extra" words that make the "student" to understand the presented content almost effortless. Thank you !!! 🙌

[@vdespa]

Thanks, AT!

[@JoaoPaulo-cb7jc]

This video helped me a lot to understand the postman once and for all, the course information is well structured.

[@vAnoski_dragon]

Thank you, thank you, thank you! I can't say it enough. This is super helpful and I love the way you have laid the sessions out. Happy viewer and learner here.

[@confused6526]

I'n only 1/3 of the course but I already fell in love with the way he articulately presents the steps. Not many people can teach but this dud does. You're born with this teaching skill. Thank you!

[@vdespa]

Thank you, you are too kind.

[@Eriatolc2]

OK. Let's state it: this presentation was a masterpiece. Both simple and yet precise and full of explained functionnalities. Great job, Valentin, and thank you. It really does help!

[@vdespa]

Great to hear that, thanks!

[@madifz]

Not going to lie, learning web dev going into backend felt so intimidating. This course was really fun and knowing how to run API calls with Postman feels like a new superpower.

[@vdespa]

So true. Thanks for your comment.

[@janitaayche3635]

After looking all over I finally found a video that I can follow without getting unknown errors. Thank you for such great video!

[@joshkny]

You literally answered all of my questions in this one video. I am now able to leverage the Qualtrics API to do some pretty amazing things. Valentin, much appreciated!

[@vdespa]

Great to hear, Joshua! Thanks for your comment.

[@vijayshekhawat3631]

Just completed the whole course and definitely it is a best course for beginners for learning postman. Thanks Valentin and please keep uploading these type courses these are very helpful and the best part is the way of explanation. Thanks again.

[@vdespa]

Thanks for going through the entire course.

[@gilbertopecina6900]

Thank you very much Valentin! The details, explanation and assignments were great. I felt overwhelmed at work by not having experience testing APIs, I watched this today and now I'm testing our team's APIs (way more complex but the bases you explained are there). Let's goooo!

[@vdespa]

Happy to hear that, thanks for your nice comment.

[@AdityaSingh-bi1xj]

Really good tutorial. Explanations are not too deep but enough to get the hang of the feature & how one can explore more. Thanks a lot :)

[@MegaJJ67]

This is one of the best self study videos I've seen.I stopped numerous times to mess around myself. If you want to you can learn the basic and a bit more in 2-3 days with help from this video. This gives you a good solid foundation. Huge thumb up ! Easy to understand, very modular like Lego bricks.

[@vdespa]

Thanks, Jesper - much appreciated!

[@X2TiwnsCooOl]

You are just a life saver, I am just a beginner and this video has helped me in undemanding some of the things I dreaded about APIs. Well done and thanks for your time.

[@vdespa]

Glad to hear that, thanks for your comment!

[@zekethep1umber]

for anyone trying to use newman but are getting errors in your tests, you have to export your global variables from the web interface in postman by clicking "environments" -> "globals" -> "export" and when you run the test via newman in the cli, you have to add the comand line option '-g ' at the end

[@devopsstudio7301]

The most beautiful thing of this tutorial is, teaching complex things in simple way. Just hold tight for couple of hours with this video, then you are far better equipped with API testing.

[@vdespa]

Thanks for your comment! Glad you like my teaching style.

[@manpt123]

Just finished the full video with hands on practice. Can't thank you enough. Thank you so much for this great video. Wish you best of luck, valentine.

[@vdespa]

You're welcome! I'm glad to hear that you found the course to be helpful and that you were able to put the concepts into practice. It's always rewarding to see students applying what they have learned and achieving success.

[@lofijedi]

After looking though so many other videos, this one seriously was so clear, concise and to the point. I appreciate the effort, I was able to learn so much

[@vdespa]

I am glad you found what you were looking for.

[@thinkjon]

Just learning APIs, really appreciate you covering a variety of calls. Very helpful, thanks.

[@erioncuni8025]

The best way to explain the main functions of Postman without waisting time.Great Job Valentin!

[@vdespa]

Thanks, Erion!

[@danielalazin4090]

I love your style Valentin. Your video tutorial is clear and transparent. Thank you for sharing your hard work with us. Much appreciated.

[@vdespa]

I am glad it was useful, thanks Daniela!

[@Godsserver22]

It's just an incredible video, couldn't be more perfect and effective, and I love the instruction of your voice..for sure adding to my list. Thank you so much!

[@scrumwithvalentine]

Thank you for your kind words, Nadia!

[@KalinZahariev]

This has been a very informative and well presented tutorial. Well done, Valentin. Keep it up!

[@ilefrjiba3978]

I really can't thank you enough for this instructive, educational and straight to the point video ! Thank you so much !

[@niveditamirjikar409]

Amazing content 🙌🏻👏🏻👏🏻😊 so neatly explained without any show off and graphics and different sharp high and low tones. You are so damn good at it more power to you😇

[@dipankardey1044]

This was really a very good getting started with postman and gives enough opportunity to learn for most common use cases. thank you so much

[@vdespa]

You're welcome!

[@KansuBaydede]

I was looking for a course for so long. Thank you for this. Great job!

[@kevinking1566]

Brilliant intro to Postman. Really enjoyed it. Thank you so much!

[@herbyraynaud8249]

One of the best tutorials I've ever seen, hands down. Well done!

[@vdespa]

Thanks a lot!

[@md.siddiq7165]

Thanks it will be very helpful for people starting with postman. It's such an useful tool

[@thisurathenuka8362]

Wow! I've been using Postman for years but didn't know it's capable of automation. Thanks a lot

[@shubhi113]

What an amazing tutorial. Just perfect in terms of content, pace and details. Just every thing i needed to know. Thank you so much for this.

[@vdespa]

You're welcome, Shubhi!

[@ko-jiro5971]

What a nice coincidence while I'm doing my API 🤣 A BIG THANK YOU!

[@user-wc1sm8cj8s]

almost same here, studying HTTP and API basics today

[@riteshbhatt7080]

same here, just had a call with my manager to do the same, here i got this recommendation Universe works in mysterious ways

[@IshanKesharwani]

This looks amazing. Bookmarked !!!

[@srinivasangovindasamy5914]

One of the best educational videos explaining details at a steady pace. Kudos.

[@MegaJJ67]

Valentin, you're my hero :-) Some 2 weeks after I took this first course, I watched another video of yours and voila, I found the solution to a problem I was struggling with, fast and simple.

[@braydonbudde221]

So I paid around $20 for a highly rated Udemy course, and I feel robbed after watching this video. So clear and concise, great job on what I can only describe as a great tutorial for Postman!

[@patoma847]

This author has a good course also on Udemy

[@round4software]

Absolutely fantastic training. I got my API testing set up and running in one afternoon. Thank you for all your efforts and for sharing this information.

[@vdespa]

You're welcome!

[@entidadestelar]

Thank you so much for this videotutorial about Postman! I always wanted know how to work with this tool, and finally I found this video and I'm very grateful :D Hugs from Argentina/Perú (South America).

[@yusupow]

This is pure gold, thank you for the great tutorial

[@vdespa]

You bet, Jasur!

[@davidjunghan91]

I’ve bought this guy’s postman course at udemy. This video is really useful! I strongly recommend

[@cookingstudiobynusrat8801]

Can u plz give the udemy course link 😊

[@alivtech3215]

Great resources. I am in the beginner stage of the backend and helped me a lot to learn Postman

[@MayureshKadu]

Loved this course. As people before me have said - well paced, well explained and to the point. Thank you!

[@dandumitrescuLXXXVII]

Very informative and well presented course Valentin! Congratulations 🙌

[@bartekz88]

My God, this is what I have been looking for since last year! Thank you!

[@Bharath0999]

Super thrilled to learn more about Postman after watching this Video. Thanks to Valentin Despa!!

[@momoking11]

Thank you very much, now waiting for advance course. hope it will continue.

[@vikrantambekar3394]

Thanks I was lokking for it for a long time it means a lot

[@vijaynavale3919]

Mg bhava kontya stack vr kaam krtos?

[@Luther_Luffeigh]

Oh perfect topic 🙌🏽

[@codepraycode]

The fact that he changes his theme before anything else, is just wonderful.

[@davidlopes6988]

I learned so much new information that I don't know how to say thank you. You are the BEST.

[@NMNaufaldo]

just checked his youtube content, and I don't realize that we can create a lot of tutorial with postman

[@trevorribbans2256]

@Vanessa pera yeah definitely going to give my money to a random youtubers "assistant" lmaoo

[@aarriele]

I LOVE YOUR TUTORIAL it's very easy to follow and understand! Thank you so much

[@vdespa]

Thank you. Check my channel for more Postman-related content!

[@aleksandarlukic736]

Crazy video Valentin. Really well explained and great examples! Thanks for the lesson :)

[@Cruz0e]

"Collection" now is called "Folder" I am following the course, and it also allows you to save the API code in the main folder, thanks for the video btw, finally I can listen to some tech stuff in not-Indian accent :D (don't misinterpret me, I have no problem with Indians, I like them, just listening to tech stuff in their accent is painful)

[@kennitodevangavani891]

Great Great Resourceful Video 🔥 🔥 🔥... The logo, the human / man looks like Michael Jackson without his suit and hat preforming Smooth Criminal.

[@ShivamSingh-en3fu]

Looking for this thanks

[@janetdsouza3057]

hey -- I did the UNIT 1 , in which we manually test the API's . Loved your way of teaching. Thanks a ton !!

[@vdespa]

Hey Janet, keep going! I am sure you will learn more useful things.

[@paulallen8597]

I'll make this short and sweet. This is an excellent course. It quickly got me familiar with Postman so that I could write API tests for some perfromance testing I need to do.

[@vdespa]

Thanks, Paul!

[@LaHolidaymaker]

Great course! I also prefer dark theme most of the time, but for the purpose of making an educational video, light one would have been more clear.

[@nguyenthanhcong92]

great video and nice voice - thanks from Vietnam

[@MudiagaMoody]

Wow! I have not been using postman properly at all. What a wonderful eye-opening course this is. Thanks a lot for this resource.

[@vdespa]

Thanks for your kind comment, Mudiaga! I am glad this helped.

[@ravindramanneru5001]

Excellent!!! I truly enjoyed the course. Thank you very much.

[@akashbhadouria6727]

Thanks will look after 5 months.

[@mahbubalam1919]

Thanks.

[@thomasferber480]

Very good tutorial, thanks alot! This encouraged me to write automated api tests using postman!

[@rohiitkummar]

The moment when you told switch to black theme. I knew I came at the right place. So clearly explained in the simplest possible manner. Thanks a lot.

[@vdespa]

Thanks, Rohit.

[@AshleyModise]

make sure you don't skip the first step in this tutorial of turing your dark mode on or else nothing will work

[@vdespa]

[@odilanmaevidence9545]

What a good man

[@ffmaniac]

are u sure it's a man ??! looks like a woman more than a man...

[@gokulanand8944]

One of the short and Great way of learning Postman for API Testing in a Simplest and easiest though a Practical and effective way. Kudos to you FCC.😀

[@Yang-gn5wl]

Thank you so much for this course. This course is really helpful to me and I really appreciate your effort of making such an excellent tutorial/course video for the public.

[@vdespa]

Glad it was helpful!

[@huuloc8719]

good job.

[@shashanksam]

first thing I like to do " change to black theme" this should be important for every tutorial lol

[@charlesbaldo]

I actually prefer white background theme.

[@zkhanzut]

Excellent explanation and hands on course for anyone to learn the API thru Postman! Good job

[@riyatiwari7178]

Thank you so much Valentin for an amazing course for free. Would love to learn more, have got more appetite now.

[@koraykocak3766]

Thank you for this awesome course! I just have a question. When we take a token and copy it for authorization, I forgot to copy it and sent another request to {{baseUrl}}/api-clients/. But this time as in the video, I recieve "error": "API client already registered." I waited for a couple of hours but I still get the same error. Does anyone know how I can solve this?

[@emilbose9153]

Hi there, try to change the email address

[@semiserioussam]

I used one of my person emails and it worked.

[@jadidanwar5095]

@@semiserioussam thank you!!!! appreciate it

[@stephanurkel7567]

If anyone gets the “API client already registered” error when creating a token @36:10 change the client name and email to something unique. Don’t use the same domain like I did smh

[@gauravbahl5397]

Thanks Mate

[@stephanurkel7567]

@@gauravbahl5397 Great tutorial. Thanks man

[@rvlaraujo]

Thanks, man! You save my time.

[@MrJANSEE]

I get "Cannot PUT /api-clients" error. How to solve?

[@MrJANSEE]

Got it. Thank you