Hmm, no offense, but sounds to me like you are the one upset because newbs are not practicing their champions before playing Normal. Hey, don't get me wrong, I hear ya on this. But you gotta keep in mind that this is only Normal and not Ranked. Your Elo doesn't get affected and the only time you should be frustrated in Normal is if you go on a losing streak when all you wanted was a simple First Win of the Day bonus.
Besides, champions in League of Legends is simple enough that picking up a champion isn't too hard (Mastering one is on a HNL, whole 'nother level). There are champions that play similarly in one role. Like Rammus and Amumu. Their main goal in the game is the same: Be the first one to go in. Their laning phase plays out similarly - horribly, mind you, but new players don't know how to jungle and don't have the runes to jungle - and their item builds are more or less the same. As long as they adhere to what worked for them in the past, they shouldn't have trouble transitioning from one to the other.