I get it from everywhere -- I've gotten a lot of updates from CBS lately 'cause I've been watching so much of the NCAA tourney and they have periodic war updates between games. But beyond that, there are a million places -- everything from cnn.com to MTV, fair.org and the reports it links to salon.com to stuff my dad tells me to things I've discussed in class. I think it's important not to limit yourself when it comes to sources, 'cause -- as discussed in the other thread -- the more you read different sources, the more informed you are.
This is an interesting website too; its purpose is to trace the amount of civilian casualties in the war.
http://www.iraqbodycount.net
Not exactly a source of a lot of information about the war, but informative nevertheless.