Like most of the textbooks I rate here, I didn’t read it cover to cover, but over the course of this semester, I read most of it, and it was a valuable combination of instruction about reference service and lists of resources to consult for the different questions librarians receive. The fourth edition is fairly recent, and when I compare it to other scholarly research we read in class, and to my 12 years’ experience working in a public library, I think it provides a solid overview and helpful tips for the different types and formats of modern reference service.
I own this on kindle, which worked well for me as a student, but I recommend the print version as an excellent resource to keep at reference desks to provide a quick, easy way to find good sources to help with reference questions. Many of the chapters are much more conducive to this use than as fascinating word-for-word reads.