Probably the biggest tip I've learned in my time playing guitar: playing and practicing with eyes closed. It makes a lot of sense, too. When I was young and played in band, especially with saxophone. I mean, saxophone is uniquely positioned so it's hard to even look at your keys so you learn early early where each one is and you naturally master just feeling around the instrument. With trombone you're always looking at the sheet music. Learning where you are within the scope of your instrument and mastering placement it's probably the first hump of mastering any instrument. It gets to a point where in High School you memorize complicated music while doing intricate movements in marching band and you're definitely not looking at your hands. In band class you're not looking at your positioning and all that you're just reading the sheet music. With guitar chords and the fretboard are so precise that you feel an urge to look but this works as a hindrance in progress. True progress comes with doing scales and chords progressions and changes with your eyes closed. This is a big reason I want a non-electric acoustic/classical guitar. So I can just stare at my ceiling at night while I practice shredding without the need of electronics. Just me and the music. I have a feeling I can progress to advanced guitarist very fast this way.
I'm at a point now where I know my way around the entire fretboard and know the note. Classical guitar will take me to the next level. I have benefited by taking my classical musical training and applying it to guitar. I never did the tab shit and it has paid off wonders.
Different instrument, same principle:
BB King on acoustic:
Jimi Hendrix on acoustic:
