Erica Sadun, talented iPhone developer (author of MakeItMine, SendFile, SendPics, Light, SendSong, VoiceNotes, AppFlow, XLaunch, and a world of others...) has a new book published called The iPhone Developers Cookbook. Its a $39.99 .pdf download which has 385 pages of development knowledge (well, about 340 pages.. and some blank pages and tables of contents etc... ) that will teach you something no matter what level of development ability you're at.

http://www.modmyi.com/forums/iphone-...ica-sadun.html