First, just want to say thank you to you! The state of Florida has a branch you should get into contact with called The Department of Children and Families. They'll start the process for you. Good luck!!
Contact your county chlid protective service agency and inquire about becoming a foster parent. You will have to go through a background check to make sure you would be a fit foster parent.
You will go through an extensive background check. They check out your home and ask you a series of questions to determine if you're fit to be a Foster Parent.