How Watches Work
I recently fell into this rabbit hole.  I bought a cheap automatic watch - a Seiko 5, for both practical reasons and otherwise (will work after an EMP attack/solar event, but it's also just cool as hell mechanical engineering using 200 year old technology).  Then I started putting watch repair youtube videos on in the background as I did chores or wrote code. Then I started actually watching the watch repair videos.  Last week, I got a box of books, tools, and expendables.  Today, when I get home, I'll have a box of broken pocket watches to tear into and probably irreparably mess up.When I was a kid, my grandfather and I tore down some old watches as a rainy afternoon activity one day.  I was fascinated.  It wasn't until I listened to the podcast Shit Town (S-Town) that I thought about horology as a hobby again.One interesting thing I learned, is that if you're looking for a career change, you can become a certified watch maker for free.  Many of the schools are sponsored by the big name watch manufacturers, and tuition is free.  It's a full time education, so you'll need enough financial runway to survive for a year or two, but you'll come out with no debt as a certified watch builder/repairperson.