I don't like organised tours and I have to admit that when I have taken them in the past, I have always found myself pushing to the front of the group so I could hear what the guide was saying. Even that is pointless, because you very quickly forget what was said and you can't "wind back" and play the tape again. So I bought a Kindle book by Rick Steves but was very disappointed because the walks were very short. Searching on past Tripadvisor posts I came across this: aloverofvenice.com/HiddenCorners/HiddenCorne… and I felt I must share it, because it is brilliant and free! The photos alone of the 6 walks make you feel you are already in Venice and the author gives lots of background on the sights, cafes etc. along the way. These walks would fill a morning or afternoon and this man really does know about the "hidden corners" of Venice.