If you're seriously interested in learning to code, then steps 1 and 2 can be done in parallel. Having a clear idea of every stage of interaction -- pencil and

If you're seriously interested in learning to code, then steps 1 and 2 can be done in parallel. Having a clear idea of every stage of interaction -- pencil and paper are a great tool -- is essential either way. If you end up hiring a coder, there will be less surprises if you have a solid spec ahead of time. Of course, ideas will surface as you begin seeing working prototypes, so you'll want to plan your time / money accordingly.