Hope this helps.
For me, the method was to get a guitar (the best you can afford, which in my case was a '59 Fender Duo sonic), and then get to know some working musicians. Practice and jam your ass off, find out how much you really like it. If you're any good, you'll get a chance to sit in on gigs from time time, and find your "zone". One thing seems to follow another; the more you play, the better you get. The better you get, the more opportunities you get to play. Go see the most acts you can, to find out what other people sound like. And Listen , both to advice and to styles.
For a beginning drummer, with the costs, I'd advise you get to know some drummers, get them to show you some chops, and try out their kits. Then decide what sort of drum kit you want to put together, and also have some exposure to different styles of playing. (I never understood why they call it playing, it's serious stuff, if you get into it.)
Above all, get out there and play. you'll find out that on a gig, some things that worked well in your basement practice sessions fall to pieces when you're in front of an audience, especially if they're heaving beer bottles at you. And you'll also find out what works.
Check out Musicians' Friend for gear.
Just my 2 cents,
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