For the most part you will want to get around on foot. The Mall is closed to most vehicles.
By Rickshaw
A relatively flat section of the Mall allows a fleet of rickshaws to ply their trade. You can catch a ride from the Library end of the Mall to about the midpoint.
By taxi
Within Mussoorie, taxis are not very useful. If you are heading up to Landour with your luggage, it would be wise to catch a ride. They can also be hired for outings to places such as Kempty Falls or Happy Valley. There are taxi stands at both ends of the Mall. Many locals offer 'taxi' services, and if you are staying longer you will likely find these slightly cheaper alternatives.But all the taxies are under a union,so the rates will not vary and one has to hire them through the union office at library end,mall road ,kempty bus stand etc.