The major scale is the primary scale in music. When we build chords or arpeggios we use the major scale as a starting point.
Many "complicated" things such as modes are only variations of the major scale.
The major is scale is a diatonic scale. It's also called the Ionian scale. It is made up of 7 different notes.
The formula for the major scale is as follows:
whole step, whole step, half step, whole step, whole step, whole step, half step
On the guitar a whole step would consist of 2 frets and a half step would be only one fret.
Here's a list of all the major scales:
C Major Scale: C D E F G A B
D Major Scale: D E F# G A B C#
E Major Scale: E F# G# A B C# D#
F Major Scale: F G A Bb C D E
G Major Scale: G A B C D E F#
A Major Scale: A B C# D E F# G#
B Major Scale: B C# D# E F# G# A#
C# Major Scale: C# D# E# F# G# A# B#
Eb Major Scale: Eb F G Ab Bb C D
F# Major Scale: F# G# A# B C# D# E#
Ab Major Scale: Ab Bb C Db Eb F G
Bb Major Scale: Bb C D Eb F G A
