Absolutely. Github (or equivalent) presupposes that you've done some coding that is (1) worth sharing with the public (2) organized enough. A lot of "learning

Absolutely. Github (or equivalent) presupposes that you've done some coding that is (1) worth sharing with the public (2) organized enough. A lot of "learning code" is going to look like crap - the first few thousand lines of code you write when you're learning a new language, a new problem domain, or (!) both at the same time. The fact that it isn't useful for public viewing doesn't make it useless - it was an important part of the learning process. But sharing it with prospective employers is unlikely to be valuable.