A little about these:
This was my first time using the software, but I have found that I am a fast learner. I looked for a few tutorials on line and settled on this one. After about six to eight hours of work I got the final image with the two donuts. The program that i used was blender, which is a free open sources do it all kind of software. It can do modeling, rendering, 2 and 3D animation, visual effects and much more.
These are not even finished, which I fined remarkable because they look so good to me. There is a lot of other things like texture painting that need to be done. I am very excited to learn this and all the other skills.
If you want to give it a try here is the into to the tutorial that I used