www.tinkercad.com is a personal favorite, furthermore it is amazingly intuitive, pretty and fun, hence the weapon of choice for this course. I will be able to best support it as I am familiar with the interface.

Feel free to choose any CAD softwares (please look up the world CAD :) but unfortunately, you will have to look to other peers to support. We will all try our best. Web-based CAD softwares are recommended as they are easy to get started, sometimes free, and a whole lot less costly than Autodesk - more professional common softwares.

Tinkercad is a great place to start regardless

Get your account and system set up! Post your user name here, and also explain what does CAD stand for.