Well worth visiting. Really need one of the locals to take you round though. Used to be some superb jump spots hidden away and some great singletrack. Used to ride there a lot but haven't for about 4-5 years.
Your best bet is to look up the berks on bikes club (search via google) and go out on there saturday ride. Normally about 2-3hrs at reasonable pace. Ideal first ride for newcomers.
HTH
Ed