In fact, no one can deny the mobile trend. In the below figure, it shows you the mobile market size which is made at the end 2012.
| Mobile market size (through http://www.digitallabblogasia.com/?attachment_id=901)  | 
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| Total app downloads. 30 billions downloads for Apple's app (Q2/2012) ( through http://www.mobilestatistics.com/mobile-statistics)  | 
We should divide into 4 sections: resource for beginner, advanced resource, how to make money with iOS app, marketing strategy.
Let's start!
- Beginner
 - Mobile tutsplus is the great site for newbie. All of tutorials are step by step clearly. It also focuses on mobile design, mobile marketing strategy.
 - Advance resource
 - How to make money
 - http://www.placeplay.com/how-to-make-money-with-apps-1/ (must review after)
 - Design (UI & UX)
 - Mobile Usability by Jakob Nielsen. This book is very up-to-date and cover abundance of usability knowledge http://www.amazon.com/Mobile-Usability-Jakob-Nielsen/dp/0321884485
 - Human Interface Guidelines by Apple (http://developer.apple.com/library/ios/documentation/userexperience/conceptual/mobilehig/MobileHIG.pdf)
 - Smashing's Documents (http://www.smashingmagazine.com/2010/11/03/ebook-4-mobile-design-for-iphone-and-ipad/)
 - Brian Fling's slide (http://www.slideshare.net/fling/mobile-20-design-develop-for-the-iphone-and-beyond)
 - Marketing Strategy
 
Thanks for reading!
