Seth Bates and Tony Smith have written a long awaited book for end-users working in SharePoint called "SharePoint 2003 User's Guide". I am pretty convinced that there is a lot of demand for the topics covered in the book. I have had the review pdf for a couple of months now and it is very good material (sorry guys of not really participating in the feedback loop but sometimes I really need the time extender gadget from the Harry Potter movies) .

The ServerSide.Net has some chapters available for download if you want to have a look at it before buying it.