What are the main and important things that I should learn as an iPhone app developer?

Question

What are the important things (concepts) I should learn to develop applications for the iPhone.

Answer 1

Memory management rules .

Answer 2

Understand the design patterns that Cocoa uses. Pay particular attention to the Model View controller template and make sure that you know how to use it (Fat models, thin controllers). It will make your life a lot easier!

Memory management rules have already been reviewed.

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