All trails are well marked with various junctions with signage/maps throughout trail network.
Nuthatch is a great singletrack from the Upper Trailhead into the Eagle Ridge trail system. I ran it to the 'Chaos Corner' junction and took 'Alley Oop' from there. Nuthatch runs along the ridge of the hills, intermittent coverage from sparse pines and occasional views at Lake Chelan in the distance. Trail is flat and lots of room for double wide runners.
Nuthatch is in the foothills around Lake Chelan. Part of a bigger network of trails that you can piece together based on mileage or difficulty. There is plentiful signage throughout trail system (but not with distances or difficulty) so download this map or this one, which is good, too. Alternatively, just use the Hiking Project mobile app!