All the major players are covering the Labour Party Conference. It should be a good one -- they're behind in the polls for the first time in 8 years and all the problems they're facing are media-contrived rather than throw-money-at-it ones. And Blair's speeches can be absolutely inspired, when he tries.
The Guardian's Special Report is likely to have the best analysis, but it's always good to see the other side of the coin: The Times' conference coverage will do just that. The Times has been up for a bit of Blair + New Labour + Europe bashing recently. BBC Conference News tends to have things you can't find elsewhere - they've got the tele interviews to draw on - and the articles are short.
Oh, and of course there's the official Labour Annual Conference site, complete with webcast. We'll see how well that works on Wednesday [or Tuesday, even. As it actually is.], when Our Lord Tone addresses to the nation.