Dont flame this please. it was requested. I just do an overlay on the major tools

Here are some links
http://imageshack.us/ (to upload your work)
http://planetrenders.net/ (a good source of renders)
http://www.deviantart.com/ (a good source of brushes)
http://www.blacksungfx.com/ (a good source of tutorials)**must sign up**
any other questions please ask