If you want to read this book, I would suggest 1) go to library school, 2) take an archival/special collection course, and 3) have the professor assign it for an assignment. Alternatively, you could just work in an archive. Otherwise, there's really no reason to read it.
This is a slim and to-the-point volume that gives an overview of managing all aspects of archival processing. The authors combine practical tips, sample forms, and a hefty annotated bibliography to point the reader to additional readings on specific topics. As a mid-career lone arranger, I found this to be a nice review of the field and while some topics were treating pretty slightly (particularly electronic records) there is still a lot of good information here for archivists across the board.
A comprehensive resource for processing collections detailing methods of developing an archives processing plan, training staff, collecting statistics, and evaluating the final processed products in your archive collections.