Much for South Florida is fairly boring once you've been here a while. There's plenty to go see and do. Near Riverfront, there's always the Broward Center of the Performing Arts, they got good shows there sometimes, the Museum of Discovery and Science.
A few nice bars in and around Riverfront. Also, if you ever want to go further south, there's South Beach that be main spot. Also, on Ft Lauderdale beach there's Beach Place. They got a few nice bars there, but it's like an outdoor mall that has a nice night scene. The beach is pretty slick too. Good luck, and welcome. Just make sure you don't end up living in the ghetto. Maybe live just north like North Lauderdale, Tamarac, Coral Springs with aphex, Margate...that area is fairly nice. Or live south of Ft Luaderdale in Hollywood area...that's equally nice but lightly more expensive in some parts.