Echo what everyone else is saying here -- you won't truly grasp anything until you apply it as a solution to a problem you care about. That's how self-teaching

Echo what everyone else is saying here -- you won't truly grasp anything until you apply it as a solution to a problem you care about. That's how self-teaching always works best for me. It's the difference between driving around aimlessly and driving to a specific point on the map. Imagine something like API documentation. What's going to make you an expert in that API? Reading through the API docs end to end or acually building some projects? More importantly, which is more fun? Solving your problems activates feelings of reward, which is important positive reinforcement when you're learning something new. There's very little learned without fun.