Game dev tutorial is rather large. Why don't you break it down some and find tutorials based on certain aspects of the game you want to make :
- Graphics : OpenGL ES, Quartz 2D, UIImageView/UIImage
- Input: CocoaTouch, Custom view touch input
- Sound : AVPlayer, Audio Queue Services
- Model-View interaction
- AI
- Network based play : Gamekit
Search for tutorials on each sub-component you've decided to use and figure out how to glue them together. Games are one of the most complicated type of program you can write because they basically cover about every aspect of hardware interaction and usually have very complex "business logic".
Alternatively, try to search on gamasutra.com.