Building a prototype with Dan Gelbart [0]. An engineer and inventor, he has an 18 episode playlist of every aspect of using a machine shop to build prototypes. It teaches machining. Shop use, thinking though physical creation where order of operations is paramount. Really just a great learning experience even if you never plan on doing machining.

[0]https://youtube.com/playlist?list=PL_tws4AXg7asrBv1MMAq4AO68...