3D printing is a process that creates a physical object from a digital design by laying down many thin layers of material and fusing them together.
A good place for beginners to start building their own designs is with Tinkercad. Tinkercad is a free web app for 3D design, electronics & coding.
You can also check out MakerBot's Thingiverse, a thriving design community for discovering, making, and sharing 3D printable things. In the spirit of maintaining an open platform, all designs are encouraged to be licensed under a Creative Commons license, meaning that anyone can use or alter any design.
3D printers are available at your libraries in Gillette and Wright. We provide the Cura LulzBot Edition software that both prepares your files for printing and allows you to control the operation of the LulzBot 3D printers.