Learn Postgres at the Playground | Crunchy Data Blog
Run Postgres in your local web browser with guided tutorials to help you grow your Postgres skills.
PostgreSQL Bootcamp : Go From Beginner to Advanced, 60+hours | Udemy
Learn about Subqueries, CTEs, Indexes, PL/SQL, PL/pgSQL, Triggers, Cursors, Partitions, Views, JSON, Window Functions...
The Art of PostgreSQL: a modern PostgreSQL book in 2022
The PostgreSQL book for developers that teaches you how to turn thousands of lines of code into simple queries.