http://forum.ppcgeeks.com/showthread.php?t=42730
http://forum.ppcgeeks.com/showthread.php?t=42584
These 2 stickies are particularly helpful in letting you know the options and software available to the TP. I warn you, once you get into modding your phone, you'll get addicted. The worst of us flash ROMs every other day, hahah.