Blender is a solid option. Most likely your deliverables will be either .fbx files or final rendered images, so from the client's perspective it doesn't matter what you use, and not having to pay the cost of an Autodesk subscription is a big plus for a freelancer.
I'm currently a self-taught web designer/developer, and I've been freelancing full-time for about 7 years... And I'm really burned out. I have some experience in CG (3dsmax and Blender) but I'm far from pro. I've started spending the time to learn and improve and I'd like to freelance once I'm good enough. My question is,…