A combination of both. When you try to do something, you'll always find yourself stuck in the middle, and that's when you'll google stuff. And then you'll fin

A combination of both. When you try to do something, you'll always find yourself stuck in the middle, and that's when you'll google stuff. And then you'll find tutorials, or blog posts, or what have you. And as you read more of those, you'll see references to books and other tutorials/posts/essays. Start by just doing, and you'll eventually end up reading a lot.