rocknbil - 7:37 pm on Sep 11, 2009 (gmt 0)

Databases - depends on what you like.
MySQL Documentation [dev.mysql.com]

Forums - you're on it. :-)

Databases Forum [webmasterworld.com]

Developing interfaces to the DB:
Perl forum [webmasterworld.com]
PHP forum [webmasterworld.com]

Learning either:
W3C Schools [w3schools.com]