All of the 12 keys : Ab, A, Bb, B, C, Db, D, Eb, E, F, F#, G, are constructed identically within themselves - although they are all made up of different notes
Each key is made up of 2 families of chords :
Majors : 1, 4, 5 ( the first , 4th and 5th chords )
Minors: 6, 2, 3 ( the 6th , 2nd and 3rd chords )
with the 7th diminished chord
Intervals between the notes: Whole Whole Half Whole Whole Whole Half
2 (frets) 2 1 fret 2 2 2 1
1st 2nd 3rd 4th 5th 6th 7th 8th (1st)
And the chords that come from these notes are:
MAJOR minor minor MAJOR MAJOR minor diminished MAJOR
The technical name of the these chords are:
TONIC supertonic mediant, Sub-Dominant, Dominant, submediant leading note , Tonic
Click here to see how you can use your fingers to find the chords in any key.
Check out Terry Shaw's list of songs with chords written using the Nashville numberings system over on the Music Potential web-site
For a comprehensive index of all the scales , check out the list on the GM Arts site here