I play ^^. Sorta got thrown in the deep end when I started, a lot of my friends were already Lv 25-30, but I can't really say it's made me learn any faster hehe. I mainly play Ahri (pretty well), Caitlyn (alright) and Elise (still learning), but I have dabbled with Veigar and Ashe, and I would like to learn how to play Zyra. I prefer ranged champions because I'm a scaredy hoof XD.
Also I sadly have to agree with everypony on here talking about the ahem... animosity of the random player. People aren't generally very nice in chat, and half the time they expect a lot more out of you than they say at first (they become a lot more vocal about it as the game goes on). But skip past that (or ignore it/mute everyone who exists) and it is still a very fun game to play ^^