Like FunkMast3r here my first class was also Battlemage. I also made a guide some time ago for the very same class. It is fun to play, but it's one of those classes which is very difficult to master. My suggestions read guides, and tips before venturing deeper with it.
If you are first timer, you should maybe try mixing the much hated Defence build with much loved Warfare build. Going with shield and weapon, while having massive health and damage is just what a new player needs. On the other hand if you are expirienced in world of ARPG's then pick some caster, or ranged. My suggestion here is Ranger (Nature + Hunting), and Soothsayer (Nature + Spirit). Both of those have pets which will help you a lot with taking away aggro from monsters and giving you space to shoot, or cast spells onto the enemies.