Fishing Spots for Newbies?

Hi all, my fiancee and I moved recently to south FL and we are trying to get into fishing. We've only gone once at Key Biscayne and it was nice but we wanted to try fresh water fishing. Or anywhere where we can finally catch something more easily lol.

What are some good spots in the area? We don't mind driving a bit. Also, are there places where you can rent a boat to fish in lakes/canals and such that are affordable? Not a charter with multiple people, just us and maybe a friend.