The best way to learn your way around the multitude of trail in the area is to join a group ride...
Thursday Night Ride (TNR)
This is a group of mountain bikers in the Missoula area who get together each Thursday evening to ride trails within the vicinity of Missoula. New riders are welcome to participate.
Montana Dirt Girls
This is a group of women in the Missoula area who get together each Tuesday evening to mountain bike. The bike rides are geared for beginner and intermediate riders. The rides are geared towards the slowest riders and allow for regrouping at various turns and key points along the trail. The goal of these rides is to make sure everyone has a good time while building riding skills.