If you are new to creating 3D assets then you should visit Daz3d.com. They offer free software and tutorials to create stunning 3D visuals. With DazStudio you can easily take advantage of their existing character libraries and attributes to mix and blend so you can create something new. Daz3d isn't just limited to characters either. They offer extensive lighting, sets, and objects for free. If you need something more, then look through their catalog and discover what fits your 3D asset needs.