The best guitar notes for beginners might be simply following the low E string up the fretboard. Since you can build barre chords and power chords from each fret moving up the E string, this is a great way to learn guitar notes on the fretboard. Start with the open string being an E note, then pressing the first fret for an F note, second fret for F#, third fret for G, and so on. This can be a great way for beginners to start learning their guitar notes since it's straightforward, simple, and gets your mind thinking in terms of root-notes. This might be one of the best ways to learn guitar notes for beginners.