Long considered the essential guide to Joyce's famously difficult work, Roland McHugh's "Annotations to "Finnegans Wake"" provides both novice readers and seasoned Joyceans with a wealth of information in an easy-to-use format uniquely suited to this densely layered text. Each page of the "Annotations" corresponds directly with a page of the standard Viking/Penguin edition of "Finnegans Wake" and contains line-by-line notes following the placement of the passages to which they refer. The reader can thus look directly from text to notes and back again, with no need to consult separate...