Where will you be going PHILIP? If it's Riva then the place is full of hire bike hire shops mainly Scott and Spesh stuff. The trails are all waymarked in a hiking sort if a way ie little wooden signs with different colour combinations on them. Guided rides are also available but I imagine would be mainly in German or Italian. I have always used the Moser bike guide books which are unfortunately all in German but really thorough and when the book says the route is technical they really mean it.