Did you hear about totally free 3D modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation software before?
If your answer is no you must to look at it Blender.
Blender is a public project, made by hundreds of people from around the world; by studios and individual artists, professionals and hobbyists, scientists, students, VFX experts, animators, game artists, modders, texture creators
If you want to learn it you can check the playlist of Grant Abbitt Youtube Channel
Part 1: The Interface
Part 2: Adding and Editing Shapes
Part 3: Adding Colour
Part 4: Rendering
Part 5: Lighting
Part 6: Animation