Joe Martin also wrote "Tabletop Machining", which while promoting his own line of machine tools (Sherline), is a great introduction to machining in general.
This museum is a must-see if you’re visiting SD or south LA.
I suggested we visit it, and was very surprised that my family and I spent >2 hours (kids younger than 10). For the kids, they have scavenger hunts which require some attention to complete.
https://www.sherline.com/product/5301-tabletop-machining/