Hey Rai, good to see that you still have the burning desire to help out newbies! I can't make any promises now, but I could probably lend a helping hand tutoring from time to time. And if something needs testing in-game, I'm there for you.
Originally Posted by Raí
I'd be happy to help you out, but I would quickly suggest against playing exclusively one character.
I disagree with this. It's not entirely wrong (but not entirely right either), but just simply a path one chooses to take. Players that dedicate themselves to one champion get really good at what they do. Of course, if he decides to do ranked games, then there may be a problem, though that's not to say they can't try, since I personally know of two people who climbed up to 1600+ elo by playing only one champion.
Most people who specialize in one champion often end up specializing in a small roster of champions. I'm a bit beyond that, but I still don't play a wide variety of champions.