https://www.nytimes.com/2020/11/28/m...mes%20Magazine
You may find this is behind a paywall, in which case I apologize. It's an article done for the NYT Magazine for Kids that walks through the steps of making a guitar at the Martin factory. If you build instruments you probably won't learn a lot from it, but the photography is really nice. Some nice, highly specialized machinery, but a lot done by hand as well.