Well I've been training in MT for about 6 months. Most important thing I found was putting of calling up and starting training. I thought about doing it for a long time before I got off my arse and actually started, and now I love it.
Make sure you find a good school. You can tell one because the head trainer will have had multiple fights, and there should be some fighters there too. If not make sure they at least spar.
Train hard, go regularly.