This is from the Theory Section on the Major Scale.

We can use a special formula to help us find any major scale:

Root - 2 - 2 - 1 - 2 - 2 - 2 - 1 (Octave)

We applied it in this ActionTab to find the A major scale. Here we do exactly the same process to show you that this one special formula works to help you find any major scale.

We've picked the G note as the root note. First we'll play out the G chromatic scale along one string:

Root G - G# - A - A# - B - C - C# - D - D# - E - F - F# - G (octave)

Next we'll apply the formula to give us the G major scale:

Root G - A - B - C - D - E - F# - G (octave)

The point is that you can find any major scale as long as you just identify the root note and then apply this formula. Later we can look at playing it across strings and other stuff too. But make sure you remember this little formula. Try applying it to any root note (on any string) and find the major scales for yourself. You don't even need to know the note names. Just pick a place to start and apply the formula. This will train your ear to get used to this type of scale.

Because each major scale uses the same sequence of intervals, you'll find that they sound similar. Over time you will be able to hear whether something is 'major' or not. This will be very useful when it comes to either playing with other musicians, or making your own music. Melodies made from the major scale notes tend to be happier and strongly harmonic, whereas other scales like the minor scales can sound sadder or darker. When you know what you are doing on the fretboard, you have the choice with which direction to take your music!