We've added the main transit links (water taxi, water busses, vaporetti, etc.) and directions from VCE arrivals to the docks for Motoscafi (water taxis) and Alilaguna (water busses), as well as a link on the baggage carts many will find useful for the trek in a Wikipost (shows up at the top of every page).
On a number of these you can prepay, reload cards, see schedules, etc.