Which software is used for 3d printing

Whats the difference between rapid prototyping machine and a 3D printer? What can you make with a 3D printer? How much which software is used for 3d printing a 3D printer?

Did not find what they wanted? Try here

How to build a 3D printer? What are the materials used to print 3D objects? What 3D modeling software is suitable for a beginner in 3D design? I have no 3D design experience, how long does it take to learn 3D modeling? Where can I get 3D models online? Where can I find online 3D printing service?