For beginners, I would recommend Clark Reservation. The setting is perfect and although there are ups and downs, they aren't so steep that you spend the next half hour sucking wind. Bear Swamp has some great caching trails-going in one directions grabbing "isn't it grands" and returning on the trail with the "glimpses" caches, with a few extras here and there, was around 7 miles by the end of the day. Of course my new favorite hike is at Pratt's Falls, but I may be prejudiced.