[ma_mazmaz]

When looking to improve your programming ability, it's important to ask for what end you are improving your skills. If your goal is to become a professional computer scientist, then you'll need to choose an area of focus. The field of computing simply has too many facets for anyone to master them all. If your goal is to learn, simply for its own sake, then all that matters is that you are enjoying the learning. It won't matter what technologies you use, or if what you're making actually works, so long as you enjoy it. In either case, you should choose something to learn that interests you. There are many highly sought after computer scientists, who specialize in computer vision algorithms, for example, who get recruited by companies all the time, despite knowing little to no software engineering and data structures. TL;DR: Learn anything, it will get you places.