Everybody & his dog really, depends what you're after, head for the woodbine cafe at Hope, starting point for alot of the Dark Peak classics, which tend to be very hard but hugely rewarding rides.
If you're after something a little 'softer' but only just, maybe start around the Bakewell area...... & head out to places such as Eyam, Stoney Middleton, Monsall head etc etc
I've been riding the peaks for years & am still exploring & finding new places
'White Peak Mountain Biking' & it's Dark Peak equivalent, both by Jon Barton are a good starting point.
Good luck
