I (finally) got around to opening the new Scot Hillier book Advanced SharePoint Services Solutions. Right out of the gate, he describes CAML in great detail. Very nice.
He mentions in the introduction that this is not a beginners book, and rightly so. In the first two chapters, there is just a little introduction and then lots of detail. For example, the web services chapter dives right into create a SOAP request with spending time explaining SOAP. This is perfect for me!
The last half of the book discusses other related Microsoft products: IBF, BizTalk, MSMS. Since I've not used those too much, I haven't spent time in those chapters. But the first half of the book has been very helpful.
You can view the table of contents at the Apress site.