I’ve heard many negative things about this software, so I’d proceed with caution.
You won’t find anything that has character modelling in the style of The Sims 3 or Guild Wars. All game models are typically hand crafted in Maya, 3D Max or similar. If you’re happy to put in the time and effort to learn these, then Blender is a good place to start as it is free, but full featured and an excellent introduction to modelling.