How did we learn? Short answer - we taught ourselves. Some stuff was learned in courses and school, mostly we taught ourselves and each other. I can't answer for my friends, some have been doing it longer than I have, some haven't. The long answer follows from my own account.
We've all been doing this stuff since we were kids/teens. Me, I was a poor kid (3 brothers, 4 sisters - my dad never made more than $45,000 a year before overtime) who couldn't afford to buy alot of games or toys. Library books were my world. I was a master at trading with friends though. I just always had an interest in electronics, video games, and computers. In High School my best friend Jay's parents both worked for AT&T labs, and they had an incredible amount of computers in the house. If anyone remembers the BBS days - and you lived in NJ - you probably heard of "The Violent Playground BBS"(multi node Renegade BBS - heavily modded) run by "ffejtable". Ffejtable was my best friends older step brother Jeff. We used to play Basketball until the sun went down in his driveway while we downloaded stuff over a 14.4 connection ( on his Zoom 14.4 attached to his 486dx2/66 16MB ram 540MB HD Diamond VGA card- kick ass machine at the time); when the sun went down, we'd play games on his computer, and on his SNES(huge UN Squadron fan). One day I was at a guys house I knew from Church, using his computer fixing stuff for him on his new computer. He gave me his old machine - which became my first machine -
IBM model ps2 55sx. (legendary machine if you know the grassroots of Linus Torvalds Linux) 386sx 16mhz 4MB ram 30MB HD and a 2400 Baud External Hayes Modem. With a 30 MB harddrive, I could load Dos 5.0 (5 megs - I later learned to strip it down to roughly 1 meg - by removing almost all the tools) and have just enough room left for windows 3.1 ( 25 megs ). I tried to bum a HD from my best friend Jay, but he insisted I learn DOS. So I did. Ended up copying Qmodem Pro from him, and rode my bike home with a floppy disk. He set me up with an account on his brothers BBS. I started downloading, using fidonet, and generally learned how to use a computer. I downloaded the Jolly Roger's Cookbook, and all sorts of "zines". Made my first Red Box. Stole a linemans handset from a hardware store. My friend Mat was a "Carder", he taught me how to clone cell phones. My mom worked at a small pager/cellular service - and I struck a deal with her boss, he provided me with a Grey Motorola Flip Phone and a pager, and I provided him with all the internal Motorola programming schematics I could get my hands on. A year later, my sister asked me to fix her computer (Packard Bell 486sx25 4MB, Media Vision 16, 2x CD, 170MB HD), and I never gave it back to her. I started playing with modtracking software. Ripped my first WAV file from a CD on that machine. Set up a BBS with Iniquity and stole a USR 28.8 external from Vocational School. At that point all my friends were on 33.6 and Pentium 60/90/120's. I was always the kid with the slow connection on the slow pc. But I learned that when I could provide people with the files (H/P/V/A/C - if you know what that means, you might have been in the scene) they were looking for, they didn't care what my speed was - as long as I could deliver.
That's pretty much the beginning of my story on how I became a geek, or at least how I learned computers. I remember all of it, I'm still just as flexible in dos now as I was then. I randomly will remember part numbers, directory structures, and work arounds/cracks. Now I'm older - I mostly just download movies/software/music for friends and for myself. I'm a huge fan of bittorrent, still use IRC. But for the most part, the exitement of it is gone. Any moron can use a computer now. The BBS scene is dead. IRC is the only thing left that is a slight reminder of what it was to be online. Everything is so commercialized now. But we all knew it was going to happen way back then. It was designed that way; no, it wasn't designed that way, it was shaped that way by the users. We bought the software, called for the extra features, and industry complied by hiring those who compiled.
Like I was saying, the initial exitement is all but gone. Now it's just a normal thing to me. I usually see movies a few days before they come out watching them from my couch thanks to the s-video out on my video card. My friends will occasionally ask me for stuff, 9 times of 10 I don't even need to download it - I already have it.
I'm a digital packrat. It's what I do.