Hi Karen... Thank you so much for the wonderful compliments on the post... I am glad you like it and found it useful.
As far as the SQL order of operations goes, I am still learning them myself. However, I have yet to find another resource that explains them better than this one here:
https://blog.jooq.org/2016/12/09/a-beginners-guide-to-the-true-order-of-sql-operations/
I think this post will really help clarify what is going on behind the scenes when a query is executed.
I know I found it very informative.
Enjoy and good luck!
Thanks again!