Knowing the FoD as well as I do (better than most, not as well as some), and that it has taken me 15 years or so of riding there to build up my current knowledge… Either pay a guide (which you can do), or ask nicely for members on here that will show you round in return for coffee and cake.
Most of the trails/Strava segments aren’t at all obvious, you may end up riding some of them by accident but more than likely you may not.
That said, if you really insist on exploring on your own, go and Park your car in Park End or Ellwood and have an explore in the woods that side, rather than at the Pedalabikeaway centre. Here’s a link to a 45km ride I took a load of guys on a few months ago down there… Lots of off piste singletrack thrown in for good measure, but even with a Garmin 800/810 I doubt you’d find half of it on your own.
https://www.strava.com/activities/350458247