Hey Bill @Bills, hey Derek, hey Andy, hey Auntjemimma,
Bruce @GrandPooPaw, hey all,
I agree to this, mastering a CAD/CAM software takes some time so you should start early. If you have to rely on what others created, it will become boring, better learn to create your own objects.
And there are also many free and open source tools today that are very evolved.
See here for details.
Be sure that you master your CAD/CAM software and you are able to create objects in virtual 3D space when the machine arrives!
Welcome to the forum!