Find the note
It's important to know how to localise oneself on your instrument, and during the years, I've
seen lots of neck exercises to learn this. Some are easy, others difficult; some are funny,
others unbearable. It may be hard to find one that works well. But here's one who works, but
you must play with my rules. You need a guitar, a metronome and lots of concentration.
Choose a note you want to localise and set your metronome on 60. Then on each click of the
metronome, localise this note on the sixth string in every positions. Without missing a click,
get to the 5th string and find this note, again in every positions. Continue on every strings
and use the open strings. Remember, NO CHEATING. If 60 is too much fast, set it down. If it's
too much slow, set it up. And more important, practice with the 12 notes.
If you just began, find out a tablature of the guitar (a diagram of the neck showing the name
and localisation of the note). Use it to find the desired notes. Do this exercise every day,
until you can do it while you sleep.