If you're going to start playing LoL, there are things you should know:
1) There are going to be alot of hate when you mess something up (sadly alot of guys you might go against/with in the beginning are smurfs (new account old player) but don't let that get to you.
2)Don't worry if you can't get the hang of how things work at first... It's a bit tricky to get the hang of gameplay and mechanics.
there are more things but once you start getting the hang of it... say goodbye to any social life you once had