Random Tip: You don't necessarily need to play to learn how to play a champion, watch VODS!

This strategy may not work for everyone and every champion, but it has worked for me quite well.

I usually don't play too much League unless my schedule is pretty open, but in those times I usually am able to watch some pro VODS, korean challenger VODS, etc.

You can learn from watching these VODS, and a good way to keep track of how much you're learning is by following a simple checklist: #1: What is this player doing that I could implement into my game? #2: What are the strengths of this champion in this instance? #3: How does this champion do in team fights? How should he be played in a teamfight? #4: What are the weaknesses of this champion in this instance? How is this player compensating for them?

I followed the basic foundation of this checklist when I was watching some Jayce VODS and actually learned how to properly play him in lane and in teamfights.

Give this kind of learning a try and you might just see your performance on a champion improve.