The great thing about online learning is that it doesn't need to be linear like in a classroom situation.. but it does help a lot to begin with a structured approach to get the foundation/fundamentals. I know that I am a lot like you in that I feel I need to do things in a certain order but once you get to a certain point you will find that you can make your own order.. As long as you stick to that order which you decide for yourself, you'll do fine..