Blender is a free open source 3D program. You can get some really amazing 3D models from using the program, great for if you’re looking into doing some special effects for a video or photos. The one down side with any 3D program is that they are very complex and take time to learn. From what I’ve read Blender doesn’t have some of the advanced features you would find in other 3D software like 3D Studio Max or Maya, but Blender is a great way to get into learning 3D modeling. You can learn more about Blender HERE