I'd be seriously interested in reading that.

I got into watches because I inherited some old mechanical pieces from the 50's that belonged to my great grandfather. An auto timex and a manual wound aureole. The timex being a timex can't be serviced but it keeps great time, the auto-rotor just wallered itself out a bit so it rattles. I got the aureole fixed and was absolutely fixated by it.

I got a couple Vostoks and years later decided to learn how to fix them, because a service is about 3x the cost to buy a new one, but they're not disposable pieces whatsoever. Turns out you can buy beat to shit vostoks from Ukraine for basically 2-5 bucks a watch and tear into them till you're blue in the face. I moved onto working on some old american and swiss pieces, did a small repair on a 70's tissot with a worn out cannon pinion and did a full service and polish on my late grandmothers tiny bulova as a gift to my sister.

To get the proper screw drivers, tweezers, oils, etc was a bit expensive, but not more than a single service. Nothing beats just getting in the zone for 4 hours meticulously taking apart and cleaning each piece, and slowly putting it back together, oiling to spec, and watching it come back to life. Jeez I honestly miss it a lot but my new apartment has all carpet floors and I'd lose an incabloc spring or jewel in an instant.