Quick summary:
C Major Scale - C D E F G A B and back to C again
Intervals (W=Whole Tone 2 frets, H=Semi Tone 1 fret) - WWHWWWH
Chords in C Major (Triads) - C Dm Em F G Am Bdim C
Chords in C Major (7ths) - Cmaj7 Dm7 Em7 Fmaj7 G7 Am7 Bm7b5 Cmaj7
We've talked about this a fair bit though, so try the forum search feature - you'll find loads of info...
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