It's a difficult question to answer without knowing more specifically what exactly you're trying to do and what level you're at if you're looking for tailored r

It's a difficult question to answer without knowing more specifically what exactly you're trying to do and what level you're at if you're looking for tailored recommendations. Assuming you have some experience already I find the best way for me personally is to just re-implement something I'm already fairly comfortable with in X/Y/Z language / library you're trying to learn. The problem solving along the way of doing so will teach you much about the quirks of whatever it is you're trying to learn. Without specifics otherwise it just comes down to the usual generic advice given - check out the official docs, take a look at interesting existing projects that interest you, etc...