Here's how I play SMOKIE'S Now You Think You Know

Intro:
-----------------------------------------|
-----------------------------------------|
-----4-----------------------------------|
-2-----5-----------------2-------2-----5-|
---3-----------0-2-3-------5-3-5---5-3---|
---------0-2-3-------(1)-----------------|

but you can play rythm guitar chords instead of intro:
C G Em F C G C G

Verses: C Em C G G F# F C G F C ( G )
        C Em C G G F# F C G F C ( G )

Biss: C G Em Am F G C ( G )
        C G Em Am F G C ( G )

All this repeats three times or so.You may listen to the tape.