>Does anyone have any suggestions on a good book on Postgresql. Its finally time that I wrap my head arround the power of postgresql over Mysql. I need to start doing advanced functions like triggers, and data replication.
>
>Thanks
>Bob Lee

An online book, also for sale in paper, rather recent...
http://www.ca.postgresql.org/docs/aw_pgsql_book/index.html

There are also good references that the PostgreSQL documentation website.