[wmaiouiru]

I would do both simultaneously and partner with someone that has experience programming and give you feedback on the idea and your programming.

Starting to learn programming from scratch would be a little bit difficult since there are so much to learn. Having an idea in mind would be your compass. Given that big picture idea, having someone to guide you to learn the area to help solve piece of the puzzle would save you lots of time. Depending on your idea, what you learn in programming might be quite different.