I too often answer the same kind of questions regarding basic topics like memory management, UITableView, Interface Orientation, MVC, etc...
I understand very well that everyone starting with that SDK is too exited about getting its hand on it, but a little reading would save them hours of debugging and the frustration that come along with the feeling that "We miss something here".
I'd like experienced users to share the few small articles, white papers, documentation, book chapters that helps other save their time and avoid frustration.
My first vote would be for:
- IOS Memory Management Guide
- View Controller Programming Guide
- Table View Guide
And as a general recommendation, read the overview section that come along with the documentation for every class in the reference library, it contains most of what you need to know to avoid the big traps!