Learn 3D Modeling
3rd - High School | Online/YouTube video
YouTube playlist illustrating the basics of the software package SketchUp, a fairly easy way to get into 3D modeling.
4th - College | Website
Tinkercad is a free, easy-to-use app for 3D design, electronics, and coding. It's used by teachers, kids, hobbyists, and designers to imagine, design, and make anything!