First is a book that I actually didn't "read", but it was read to me. I downloaded it as a series of podcasts, each one a chapter of a book written at the beginning of the 20th Century, called Comic History of England by Bill Nye, obviously not "The Science Guy". It was moderately amusing, certainly engaging enough for background sound while I drove. I downloaded it from iTunes; there's another one there by the same guy about "America" which I've yet to get to.
Then continuing to read the various Expanse novellas, I read the prequel to the series, called The Butcher of Anderson Station and I found it to be very good. One more novella, and then I go back to the novels.