This is it. This is not the only way, but this is what worked for me as well. od2n, the main problem for you at the moment is that you don't know what you don'

This is it. This is not the only way, but this is what worked for me as well. od2n, the main problem for you at the moment is that you don't know what you don't know. So you have to try and recreate things in order to understand what's involved, how it's done, what are the limitations, etc. Software design is in a very big part an acquirable skill, so the only way to master it is to exercise.