Digital Design - Tinkercad
Follow these tutorials and you'll be on your way to designing some amazing things! But first, lets go get setup with Tinkercad, a free online CAD software.
Create a "personal account"
Once you are all set, you can login and start learning!
Check out the Tutorials where you will learn all about the basics.
Complete the project tutorials!
Start with the first tutorial and make your way down. It's important to know how to learn all the basics first!