It wasn't until my second day in Venice that I realized one possible major reason why I love the city so much - no cars!! None at all. Just feet and boats.
Other great surprise for me: Italy has recently banned smoking in bars/restaurants! Woohoo! I went out to a bar and came home NOT smelling like an ashtray! What more could you want?
Quick Tips:
It's definitely a good idea to famliarize yourself a bit with the Italian language before coming.
If the tourist office in the train station is open when you arrive, stop inside. The ladies there were very helpful.
The Rolling Venice card (3€, good for 1 year) is a great deal for those under 29. It gives you discounts on restaurants, shops, hotels, etc., and you save 7€ on the 72-hour Vaporetti pass (normally 22€).
No matter how long you stay in Venice, you'll wish you'd stayed longer, so keep that in mind when making plans. This is not a city you want to do too quickly.
You might want an entire day or at least an afternoon just for wandering around the town.
Don't use your map too much; it will just waste your time. It's really difficult to find things, so it's best to just explore and come across the things you want to see. The major sights like San Marco and Rialto are marked on street corners with arrows, so you won't miss them.
Explore the islands.
Best Way To Get Around:
Your feet! It's the best way to get a feel for the city. Also, the
vaporetti (water buses) are a good way to see the city from the canals without paying loads of money for a gondola. Take at least one trip on the canal to get some great photos of Venice. Also, you'll take the
vaporetti to get to the islands, so think about how much you'll be riding them in case a transport pass might be a good deal.