Blender is mind-blowing - it’s free (although you can certainly donate) and is packed with features that make it a growing challenger to much more expensive studio software. The big advantage we found was that, because it is free, there is a wealth of YouTube videos that explain every aspect you could possibly want.
Blender 2.8 has just been released which is a real game-changer, with a much smarter streamlined interface and an amazing feature set.
If you are interested in learning Blender these sets of beginners video tutorials is a good starting place.
