We came here with family - four adults and one child, and enjoyed a nice walk while our neice collected various leaves and rocks to play with along the way. The trails are fairly well maintained and marked and it is an easy walk, even for people with a bad backor or bum knee. There weren't a ton of descriptive signs, but my husband had lots of civil war stories to lecture us on. I keep hearing you can take a free guided tour with a volunteer but we have not done that, yet. I believe the Battlefield tours are held on Saturdays and Sundays at 11am and 1pm, but not in the winter. We will likely take a tour one of these days. Check out their website for more info: nvrpa.org
Warnings: There are no toilets along the trails, so use them in the parking lot before you set off. There are also no trash cans along the way, so carry out what you carry in.
Ladies - do not go jogging here alone after dusk. Leesburg is a pretty safe town, but I've heard rumblings of the occasional scare here for lone females out for a walk/run.