Best way to learn PostgreSQL stored procedures? [closed]

Answer 1

You almost had it, but better start here plpgsql

Some will point that PL/pgSQL is not the only way to write Stored Procedures for PostgreSQL and they will be right (that's one of the advantages of Postgres), but on the other hand PL/pgSQL is nice and relatively easy to start with.

Answer 2

Note that obviously, here's a good place to start:sql-createfunction