Documentation:
Enabling POP in Gmail
https://secure.privaterra.org/tools/wiki/Gmail
Illustrated guide to configure & enable POP in Gmail
 

 

 
Useful Links:

 

 
Training:
How to filter Gmail image spam
http://lifehacker.com/software/gmail/how-to-fil...
 
Create an Email Blacklist in Gmail
http://googlesystem.blogspot.com/2006/08/create...
 
How do I set up Mail Fetcher?
https://mail.google.com/support/bin/answer.py?c...
Gmail allows you to fetch mail from any of your other, non-Gmail accounts.