Is there a shuttle service for the national scenic trail? Where do I get a "good" map with mile markers, camp locations, etc.? Having a hard time finding really good info on Florida sites.

Go to the Florida Trail website and there is an interactive map available there. There are some trail angels who do offer some rides and shuttles. They can be contacted by going to Florida Trail Hikers group on Facebook. There is also a Guthooks app for smartphones that will give detailed hiking information and a map. There is a fee to purchase the app.

There's no shuttle service and there's no good government provided map you got a kind of guess based on GPS directions and the map that they do provide.

Look up the state park and the Contact Us section will guide you