Here is some additional information that will provide more details and answer some of the many quesitons that some people might have about this deal.
This link is to a press release from Google. Like so many press releases, it is very positive in tone.
Google Press Center: Press Release
Here is a link that will allow you to obtain much more information. You can listen to a conference call between some Google executives and YouTube founders. The conference call was this afternoon. It is about 30 minutes if you decide to listen to all of it. But a lot of ground is covered in the conference call.
Google Investor Relations