I do find that the third party site: https://www.postgresqltutorial.com/about-us/ https://www.postgresqltutorial.com/about-us/ is a very helpful supplement to

I do find that the third party site: https://www.postgresqltutorial.com/about-us/ https://www.postgresqltutorial.com/about-us/ is a very helpful supplement to the official docs. Unfortunately it's not comprehensive - for example it doesn't appear to cover pgcrypto extension.