Everyone talks about 3D printing, and from all the things you hear about it you would think it was going to solve just about every problem on the planet. The technology is very powerful and has many applications, but it is correspondingly a little challenging to learn to use well. This chapter gives you a little background about the hardware used in 3D printers. Chapter 2 introduces the MatterControl software and discusses how it fits into the (still a little complicated) 3D-printing process. After that, we show you how to install the software, and then you should be off and running!