First of all congratulations on beginning to get your life back. Our one and only is 10 so taste of freedom are somewhat limited for us at this point.
As for the dancing, what kind of dancing do you think you might be interested in? If you like country music line dancing could be a lot of fun. Check the WWW or local entertainment section of the newspaper for country western dance clubs. Most offer dance lessons at least one night a week.
If your taste run more toward soft rock, 80's dance music, disco, etc. check the same sources for dance schools in your area such as the Arther Murry School of Dance, etc. they should have instruction for everything from waltzing to modern dance.
Good luck and have fun.