I would start with iOS. With each of these paths, you will be ready to build your first project.

Books

http://www.amazon.com/Objective-C-Programming-Ranch-Guide-Gu...

http://www.amazon.com/iOS-Programming-Ranch-Edition-Guides/d...

Videos

http://www.codeschool.com/paths/ios

http://teamtreehouse.com/library/ios-development