Good resources to learn Postgres

[Stephen]

I am currently needing to support PostgreSQL at my current job. and i
was wondering of some books/resources that can help me learn
PostgreSQL.

I can look, but i prefer to get input from others who can give me an
educated evaluation of the material.

Thanks in advance.

-- 
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.

Stephen