One thing I learned very quickly from my stay in Venice is that you always need a map! All of the streets look the same so I had to remember where I had been by the shops that I had seen along my way. Another thing I learned was bring a hat, you never know when it will start to sprinkle!
(Most hotels will have handy and easy to read maps for you to take)
Venice is one big beautiful maze! Pay attention to the landmarks around you because hardly ANYONE references the street names, it’s like they don’t exist. But getting lost is kind of the fun part, right?