In this installment of “Quick & Dirty” we’re going to deal with 3 types of 9th chords. A 9th can be added to anything but most commonly it’s added to Major 7 (Cmaj9), Dominant 7 (C9) and Minor 7 (C-9) chords.
There will be 2 positions, 6th-string root and 5th-string root. I'll put both positions at the 8th fret, therefore the 6th-string root is C and the 5th-string root is F.
A guitar lesson PDF with 9 pages of explanatory text, 12 fretboard diagrams and a demonstration video link.