Above (and below!) are the main notes over the
first 9 frets of the guitar.
So the note at fret 5 string 'g' is a 'c'
The note at fret 8 string 'a' is an 'f'
'b' and 'c' are always just one fret apart everywhere on the fretboard.
The same applies to notes 'e' and 'f'
Where are the
'sharps' and 'flats'?
They are in between your main notes.
For example g sharp (g#) is always one fret
above any g on the fretboard.
So the 4th fret on string 'e' is g sharp
A flat is always one fret below
any "a" on the fretboard.
So the 4th fret on string 'e' is also "a"
Find any d sharp (d#) or e flat (eb) on
the fretboard below...
Try any "a" sharp (a#) or b flat