[rosser]

For support, peruse the list for your continent at:

http://www.postgresql.org/support/professional_support/

For books, among the most important is Greg Smith's "PostgreSQL 9.0 High Peformance", but really, just search Amazon for "PostgreSQL" and browse the titles until you find one that matches your needs.

Personally, I've been working with postgres for a decade now. Most of what I've needed, I've just gotten from searching a/o asking on the mailing lists.