Travel
Varenna is on the Como lake.
Starting from Milan you can reach Varenna by train in one hour. Just visit  http://www.trenitalia.com/en/index.html and check the trip from Milano Centrale to Varenna.
Before departure validate your ticket by stamping it in the machines provided on platforms. Arriving in Varenna it may be helpful to have the map (see http://www.varennaitaly.com/english.html)