Lee Dzbenska: If going to Clapham Junction and changing trains, get on the last carriage and you will be right by the bridge in CJ. If exiting at CJ or Victoria, get on the first carriage to be closest to the exit.
ModernGent www.ModernGent.com: Arrive leaving plenty of time to purchase your ticket or risk missing your train due to only one hatch being open. The very friendly ticket machine saves the day!