Most common guitar chords

A
A7
A7 minor
A add 9
A suspended (add 11)
E
E minor
E dominant 7th
E7
E (barre chord)
C
C dominant 7th
C add 9
C suspended
D
D suspended
D add 9
D dominant 7th
D minor (It's the saddest chord in all of rock 'n roll! - Nigel Tufnel, Spinal Tap)
G
F
F major 7
B (barre chord)
C chord in B barre form
B minor


When you learn them, be sure to also learn the name of the note under each finger for each cord.