I'm completely new to RTS, but I think I like it.
So far I've tried Warcraft 3, which is pretty good. I still haven't finished the campaigns on that one and I think I should in order to learn as much as I can before even thinking of going against other players.
Today I found the special edition The Battle For Middle Earth 2 used, so I bought it. It's hard to say anything yet, as I've only played through the first part of the tutorial, but it seems very promising, IMO.
I'm still at the stage where I keep discovering new ways not to do it
