There's no shortcut: If you want a solid grounding in CS, you need to study CS. Go through a school curriculum without going to school. Most schools have curr

There's no shortcut: If you want a solid grounding in CS, you need to study CS. Go through a school curriculum without going to school. Most schools have curricula and program requirements online. MIT OCW is a good place to start. If you need more structure, you can find equivalent courses for free on Coursera, edX, etc. If you want to do this but don't know how to go about it, or want a "solid grounding" but don't quite know what that means or how to go about getting it, start with some of the various "learning how to learn" resources: Cal Newport's blog or books, Barbara Oakley's "Learning How to Learn" Cousera course and book, 5 Elements of Effective Thinking, etc.