I would say this is my favorite resource. https://www.packtpub.com/big-data-and-business-intelligence/postgresql-90-high-performance https://www.packtpub.com/b

I would say this is my favorite resource. https://www.packtpub.com/big-data-and-business-intelligence/postgresql-90-high-performance https://www.packtpub.com/big-data-and-business-intelligence/... Note that, as published, it's a bit dated, but by and large much still is applicable even today. Once you learn the basics the PostgreSQL docs and release notes can catch you up to what's different.