I sketched a brief Overview of Dennett's book a few years ago, if that's of any interest to people here...

It's worth stressing that he's really just explaining the "soft problem" of consciousness, i.e. its informational aspect rather than its qualitative aspect. But he does have lots of interesting stuff to say about the former. (And of course lots of folks here will agree with Dennett that the third personal data of "heterophenomenology" are all that need to be explained. I'm just flagging that he doesn't say anything that'll satisfy people who don't share this assumption.)