Forum Moderators: open
Here are a few threads to get you started...
PR Hunting technics
[webmasterworld.com]
Finding directories to be listed in for best google positioning [webmasterworld.com]
Linking Campaign Research Article [webmasterworld.com]
Linking - The Big Picture [webmasterworld.com]
Linking Outside the Box [webmasterworld.com]
Prompting sites to reciprocate links [webmasterworld.com]
Research Your Competition [webmasterworld.com]
One Page One Link - A Link Campaign Strategy [webmasterworld.com]