How I turned my pool water crystal clear in a week?

I was forced into the learning mode when my pool guy went on leave two weeks ago. Life is all about learning and experimenting. It’s actually not that hard as I imagine sometimes.
I have learned how to maintain the pool. I am pretty happy with the result after a week although I know the pool is still not perfect, yet.  Nevertheless, it is no longer yellowish green!
Questions? Comments? Feel free to let me know.