Those chords are a mess!(Guitar Guy says the chords are his own interpretation, and he is not kidding) Louis Roy is right--the chords are simple, and incidentally, piano and guitar chords will be pretty much the same--

In C--

Pick Up /- G7/
|C C/C C/D7 D7/D7 D7/
G7 G7 /C C/D7 D7/ G7 G7/
|C C/C C/D7 D7/D7 D7/
F Fm/C B7-Bb7/ A7 A7/
D7 D7/ G7 G7 / C C|

Play two counts for each chord symbol, except for the ones connected by a hyphen, which are one count each. The pick up would be (on the G7 chord) Rest two three four/(three downstrokes)--