A few Apps products I can recommend:
How To Make Apps For iPhone & iPad
Learn how to make iPhone and iPad apps. You get videos, hands-on exercises, source code and more each week. Plus a private social network and eBook! Find out how to quit your job and still get paid by making iPhone and iPad apps!
How To Make Apps For iPhone & iPad
How to Market iPhone Apps eBook
This eBook is for iPhone app developers. It is 50 pages and has 3 main sections. Section 1 will help them learn how to make a great app, Section 2 will help them learn how to market their app and Section 3 is full of great resources.
How to Market iPhone Apps eBook