Any advice for a possible new player?

I'm thinking of picking up LoL because some of my friends play it. I definitely can't put as many hours as they can into it, and I'm definitely going to be new to something like this. I know a few terms and characters but I'm very limited to knowledge. I guess I can pick up on the terms on some website but this is more for me getting used to some tricks that some better players might use? I don't think I'm used to a game like this.