Well, I sort of learned (as one does) in about 1986 or so, on an Atari of some sort or an IBM clone or just one of those computers that used to be around back then. Not my own.
I've naturally been going on that and probably typed countless lines in Usenet, IRC, web, notes, code, configs and whatever files. But it always bugged me that it's just kind of ballistic hammering with any and all fingers that happen to be near the next key.
So, I went and got a very minimal split keyboard to see if I can learn something new. The setup and layers and all that has not really been dull, but I've been pecking away slowly at typing.com and trying to keep my hands on the home row like it's 1989. I thought that might balance it out.
I just got the first unit certificate at 25 wpm. And, hey, I managed to type this post. Maybe I'll get better with time.
I've tried a few alternative mobile first keyboards. it is hard, same learning effort as learning touch typing on real keyboards and/OT learning new layout. I just couldn't stick to them long enough to get good enough. I'm not sure if mastery of them can manage to make me type on screen without looking. I think it's impossible because a screen is just not tactile. I remember I can type SMS so fast and 99% accurately with the old T9 without looking under the desk in class :P