The Doge’s Palace can be easily accessed from Piazza San Marco. Facing the Basilica of St. Mark and having the Bell Tower (aka St.Mark’s Campanile) on your right, you will turn right and take the Piazzetta San Marco. If you have a pre-reserved ticket, you will continue straight and you will line up under the loggia, queuing in the line on the left. Don’t worry there are signs for finding the right line! After passing the security check, you will find yourself in the courtyard. Find a nice spot to listen to the introductory stories (the introduction of the official audioguide).