The Twister is a good kit to start learning stunt. Personally I think that something flapless, light, and with a fairly long tail is better, like a Skyray, Phil Cartier's Gotcha Streak, or a TEOSAWKI -- the reason being that until you're about halfway through Intermediate, flaps aren't going to help your score but they are going to make it harder to build, trim, and repair your model.
If you go that route, wait to start building the Twister until you start flying Intermediate. The plane works well as-is, but it's better if it's Fancherized. Ask around until you find a set of plans for a Fancherized Twister and do all the mods (if you want to go there), slap an LA-46 in the nose (it's more engine than you need, but it can easily be toned down), and go learn how to fly better.
(I'm still flying a Fancherized Twister that I built for Intermediate and finished two years ago. I'm now flying Expert. I really really need to finish building a better plane, but I can still improve my scores with the Twister -- so, it must be a pretty capable plane).