Well, for starters you should really lurk around the UU sub fourms in dragonspiral for a while. Some useful threads there are the "combos in UU" thread and the "UU threatlist" thread. I would also look at some of the UU teams people have posted just to see how threat can be handled and whatnot. If you want to get a feel for the metagame you could use my team (I think it's still on the first page). It's a balanced team so it's not very hard to use. If your having any trouble with it you could read the whole RMT to see how I use stuff.