OK ...
Lots and Lots of songs...
But...C and C7 ... ouch!
You will NEED to learn THREE Cords (there are two chord songs but...)
C
andF
andG
have the potential to carry you into Nervana...then...add your already mastered C7 and your world is bliss!!!
Some "pros" are rumored to have gone no further than this...(until years later when they got the bucks years for a lesson or two.)
Sincerely,
Gargoyle
(come on - you must know a two-fingured G-String?)...