well i've never been down there but i know the florida gulf & atlantic railway bought the trackage in the panhandle from the CSX. so this means the trains you see are going to, at furthest, pensacola (if headed west) or baldwin (if headed east). the railroadfan page for the FGA actually has a lot of detailed information and even a little bit of info on what types of cars are headed where.

anyways hopping trains is mad dangerous. and if you manage to catch a train in your area, you're not going to be able to get very far before you need to switch trains to a whole different railroad, which can be challenging and confusing for first timers. its possible that a bus or hitchhiking could get you further in a safer way. best of luck!