Welcome to RVing and the Forum.
Making you very first trip from NY to Florida is not the best idea. Start by taking a shake down weekend trip to a campground much closer to home...even the driveway.
Don't try to figure it ALL out right away. Many of us who have done this for years and years are still making adjustments.
Start with a sense of humor and enjoy the adventure. Remember, you aren't camping on the moon. Most anything and everything is available at the next off ramp here in America.
Good luck and don't make it more complicated than it is.