Too many of these apps...
In the AppStore. This one is by far the best. Its laid out well and has a lot of tips and lesser known features for the first time user as well as for those who have had the iPhone for awhile. I found myself going through the app the other day finding things I really didnt know before and Ive had my phone for 6 months. This app promises regular updates and once iOS 5/iphone 5 comes out it will be updated again! I found I had about 3 or 4 of these kind of apps on my iPhone and when I went to do a clean up of all my apps, this was the ONLY one of these apps that I kept! Well worth the .99.!
jgwagner about
Secrets for iPhone - Tips & Tricks, v4.8