For the major scale, the key of C is a good place to start. The C major scale is easy to remember as it contains no sharp or flat notes, it is in fact all the white keys on a piano keyboard. C D E F G A B C, the intervals between these notes are as follows (where T = tone or two frets, S = semitone or one fret): T T S T T T S. The major scale is also known as the Ionian mode (R,M2,M3,P4,P5,M6,M7,8ve).

A major scale (A, B, C♯, D, E, F♯, G♯, A)