just to add a note ..
i took took three or four years worth of piano lessons when i was a youngster and of course that meant learning how to read "music". Since that time I haven't looked at "sheet music" except for a passing view.
but what is important is even with just a fundamental knowledge of reading staff you can understand quite a lot when you look at a tab sheet.
you may see and be able read tab in the typical "six" line format yet not understand the music. like the time (beat), measures, whole notes, half notes, etc.,etc.,
now, having that knowledge hasn't neccessarily made me a better guitar player. it has however, allowed me to buy music books and understand how songs/music are put together song. so when i hear that song, i see the music. and likewise, when i read the music i can hear the song in my head. ( or at least close enough for government work
)
les