Hi and welcome!

Here are some of the builds;
http://forum.pitofwar.com/showthread...-for-Beginners

But basically, rage is full offensive, since it has many skills that increase your hitting power, attack power while lowering enemies defense, armor value, etc.
War is full defensive. Many of skills offer additional protection or similar effects. Usually, if you want offensive war, people just use last 3 or 4 skills in rage tree (depends if you wish to use full heavy armor or not).
And theatrics, my favourite, is kinda in between. It has both offensive and defensive skills with "twists". Like, more chance to score knockout, more bleeding, they may entangle opponent, and many more.
If you want to know more, just read guides of each tree.