FBX is the file format, which contain either legacy animations or newer mecanim animations.
For mecanim animations, they can be generic or humanoid. This depends on how your character or animated object is rigged.
All of this is handled by Unity, not playmaker. Therefore you need to watch tutorials on mecanim for unity to understand how all this works.
What playmaker does, is triggers animations/ animation states. Ie, it can act is a animation controller, telling unity to do what/when. It can work with both mecanim and legacy animations. As long as the animation can work with unity, playmaker can handle it.
Here is a fairly extensive tutorial making your own third person controllers with playmaker:
Many people use unitys built in third person controller, or first controller. If you need something specific, sometimes people buy assets that are first or third person controllers. Making the entire controller from playmaker is probably not the recommended approach for many people/beginners, because you still need some good knowledge of unitys animation system/controls, etc.