The town trailhead offers a really fantastic little skills park along with maps of the nearby Atherton Forest Bike Park. 
From here you can ride the trail "Penny Lane" along the creek to the Link Trail (Lickety Split) which will take you to Rifle Range Rd. and Atherton Forest Bike Park. Penny Lane is accessed to the rear of the skills park.
There is a covered area with plenty of picnic benches and there is a water tap, but no other facilities - although the public toilets are not far. There is a free outdoor gym nearby.
Unfortunately the trailhead is plagued by local drug addicts and alcoholics who tend to hang around in the covered area at the skills park. Many locals do not ride Penny Lane as it is a popular spot for people to go to take drugs and some locals have even been threatened, chased or been the victim of an attempted theft of their bike.
The police and council do nothing about these issues, thus showing themselves as the main detriment to Atherton's future as a mountain biking haven.