Step 1: Create a TinkerCad account @ tinkercad.com (You must be 13 or older to not need your parent's email for permission.)
Step 2: Go through the tutorials and look around at some of the creations. Try creating something using the tools.
Step 3: Watch this video: https://youtu.be/FZhwtETwQzs
Are you ready to try your first project?
If so, grab the YELLOW folder labeled Project 1 or read it online here: http://www.3dvinci.net/PDFs/GettingStartedInTinkercad.pdf
Once you show your completed Project 1 you can start designing your first print! Remember the scale needs to be about 1 inch by 1 inch.
Get to TINKERING!
And learn how to program!
Want to learn how to make an app? Go to https://bitsbox.com/hoc2016.html