There are lots of places that are going to webcast the transit and as the whole thing lasts for about seven hours, you'll have many chances to tune in. After a look round, I thought this was the best place to steer you.
NASA Transit of Venus webcast NASA will be following the whole transit from Mauna Kea in Hawaii, but on the page there are links to several other live webcasts, so you have a good choice. There's even a link to the Space Station � they can't do a continuous live feed, but will be posting pictures and perhaps video.
I'll also note that the Exploratorium � one of my favorite places � will have a live feed from Mauna Loa in Hawaii.
Exploratorium feed for transit of Venus Remember! DON'T look directly at the Sun unless you have correct eye protection. DON'T look at the Sun through telescope or binoculars unless they have correct filters on the objective lenses-eyepiece filters aren't safe.