This is the official website of the trade show, and you can look at their image gallery and watch videos on this site. If you want the most recent updates, you can check out their blog page for a live feed of all the latest.
This live blog from Wired magazine will update with photos, videos and articles from their writers live at the trade show.
For coverage from the CNN tech team, this is the place to go.
CNET also has writers to cover the trade show live from the floor. Go here for articles on all the most important announcements as well as a live stream of important events.