Learn everything you need to know to design and 3D print your own creations. Learn: Fusion 360 (free 3D modeling program), the ins-and-outs of desktop 3D printing, and finally, how to sketch by hand (to generate solid ideas).
Blender is a free 3-D software that lets you create whatever model you want. Its difficulty is based on how well you know the hot keys. I like to use this program a lot with Garry's Mod to see how well I can make body armor or some kind of car part. I spend most of my time learning more about blender and what I can do with it.
Welcome to the world of 3D printing! In this class, you will learn everything you need to know to design and 3D print your own creations. It's really three-classes-in-one. We'll learn Fusion 360, an awesome (free) 3D modeling program that will let you design just about anything. We'll learn the ins-and-outs of desktop 3D-printing, and we'll learn how to sketch by hand so we can generate solid ideas. With this class and enough practice, you'll be a pro in no time.