jukaman,
If it's dance clubs you go to (still charmingly called "rave clubs" in America... hahaha ), then dancing shouldn't be too much of a problem.
It sounds trite, but if you like the music, you can honestly close your eyes and get into the rhythm. There's not much "dancing around" to club music. Mostly small hip movements to the beat and maybe some hand waving...
As
phredgreen says, go to the clubs, watch people etc.
A few drinks (or other stimulants) can also help a lot...
If it's a Country & Western club and she likes
Line Dancing... well that's another kettle of fish entirely.
You're on your own there kiddo!
Mr Mephisto