Instead of trying to re-invent the wheel, leverage what other successful apps are doing on the App Store.
Paul Solt has been teaching online courses for the past three years. Thousands of students have created their first, second, and third apps with Paul's expert instruction.
Paul has a Masters in Computer Science and has worked as an adjunct professor at RIT. He also writes for InfoWorld.com.
Paul understands programming fundamentals and how to teach the essentials in an accessible manner, instead of overwhelming you with too much, too fast.