Recommendations for PostgreSQL training I'm looking for recommendations for PostgreSQL training (on-site, off-site, remote) that covers administration, performance optimization, and clustering solutions like Slony and pgpool.  Finding courses via web searches hasn't gotten me very far as it seems many of the linked pages are out of date, and where they are updated, I'm not sure how to judge the quality of the course they offer.  Does anyone have recommendations for courses they took, had colleagues take, or themselves teach?
I think the best to start with is http://www.postgresql.org/docs/manuals/

These are really well written and cover everything you will need to know that is PostgreSQL specific.