I used a number of online resources - don’t recall them all but notable ones were: https://use-the-index-luke.com/ https://use-the-index-luke.com/ http://www.

I used a number of online resources - don’t recall them all but notable ones were: https://use-the-index-luke.com/ https://use-the-index-luke.com/ http://www.postgresqltutorial.com/ http://www.postgresqltutorial.com/ Postgres documentation Postgres conference videos and slides (can find on Postgres website and on YouTube) ...you can guess I don’t rely on books too much!