#1
Does learning specific songs help you learn, or does it only help you learn THAT song?

like if I master a song, will I become a better guitar player overall? or just be "that guy that can play one song well but nothing else"
#2
depends on what songs you learn, in the beggining yes learning songs does help you but I find that now learning songs doesn't help me as a player I just learn for fun. I have to practice arpeggios and chord changes with a metronome going faster and faster to get better.