Largely self-taught, with the help of a few books, but when I started learning in the 60s, seemed it was all based on either C/F/G or E/A/B7, so I learned all these chords, and later G/C/D, D/G/A and A/D/E series. And could just about do Am and Em and Dm. These days seems everyone new starts with the G series and just capos it up.
Never mastered anything that calls for a barre chord having short fingers: even the 4-string Bm, avoiding the dreaded barre defeats me: but I get by! Rarely manage a 4-string F#m- bottom string + top 3. Always down at what I heard Scottish guitarist Jack Evans call "the farmers' end" and never up at the dusty end unless on capo 7!
I did teach myself to fingerpick a bit though not to the extent of picking out whole tunes, but I do prefer it to wholesale strumming, unless its a mix of bass-strum-strum for 3/4 or Bass-strum-bass-strum for 4/4.
Never got to do DADGAD or other alternative tunings, tho been to workshops and got books on these subjects!
Oh, and that would be 50 years-worth of trying! I'm a failure really.