Re: Teach me about tuners
I feel it really pays off to make sure that anything that touches the string is high quality. I love Fender/Kluson style Gotoh tuners. Probably the best of their kind. The split shaft is awesome because they get rid of the sharp string end, and the miniature bushings (compared to other styles of tuners, not other interpretations of the same tuner) they require are really aesthetically pleasing. I like precise ratios over faster tuning too. When you string up, just use a winder. When you're tuning, the precision really pays off.
As for tuning machine 101 class, the things I can think of that matter are:
Lubrication: modern sealed tuners don't require any, but vintage Kluson style tuners aren't sealed and have a small hole in the back for lubrication. Most people who take their vintage Fenders seriously have told me that about once every ten years you should lubricate the tuners.
Locking vs. non-locking: it makes no difference while playing. The only difference is when changing strings. I like regular better though, always favored lightweight tuners with very little mass. Probably why I always disliked the heavier standard Grover style tuners.
Standard on classic guitars:
A lot of guitars from the 40s and 60s used Kluson brand tuners, mostly Kluson Deluxe closed back tuners with different tips, tulips and round metal tips, for example. A lot of people associate Gibson with Grover but that's mostly an aftermarket thing. Throughout the 50s Fenders and Gibsons used Kluson tuners with a "Kluson Deluxe" vertical stamp and a patent number stamp (earlier ones have the applied for stamp, later models have the awarded patent number). Some years have one marking, some have the other, some have both. There's other variations like a second tuning post hole at the bottom of the gear cover as well.
Mid 60s onwards the tuners started having two "Kluson Deluxe" vertical stamps and early 70s Gibson changed that stamp over to "Gibson Deluxe", but they were still Kluson tuners. Fender, on the other hand, went over to a different tuner with an "F" stamped on the back. Don't know if they were also made by Kluson.
Mid 70s Kluson went out of business and WD bought the name a couple of decades later. Yes, that means that the Klusons you can buy today are not the same tuners. I don't think I've ever used modern Kluson branded tuners. I guess I'll have to try them out sometime, but Gotoh makes amazing ones. Fender American Vintage, Fender Custom Shop and Gibson Historic use Gotoh. The issue with trying out all the different Kluson Deluxe style tuners nowadays is that they don't necessarily have the same bushing or hole size, so as long as you have a good one, might as well keep it.