Russian language: double consonants

In this series, I will teach you the core Russian words that you must know if you're a an absolute beginner.
I recommend, after you’ve learned the new words, from time to time review what you learned in previous episodes. Reviewing is one of the most important parts of learning a language!
All vocabularies are divided into topics, so you may skip an episode if your are not interested in this particular topic. Please say all words loudly so that your can improve both your reading skills and your pronunciation.
Please write in comments what vocabularies else you would like to learn?