https://www.youtube.com/@Onshapeforbeginners-m1i
This resource shows how to start using the CAD program - Onshape, from beginner, to more advanced. The Dice project is a good first introduction, as it explains lots of methods for drawing objects, including many very useful constraints. I have been using Onshape for over 8 years now and have found it to be an excellent CAD package. More content will be loaded to YouTube as time goes by.
Once you have found the YouTube Channel, you can access all other videos. You can give your students the link:
https://www.youtube.com/@Onshapeforbeginners-m1i
so they may access it easily.