Read a Good Word Processing Book Lately?

An anonymous reader asks: "I'm a computer lab assistant at a small state college, and as such I help students with their MS Office coursework. This coursework is designed to make them operable in the open market, and help familiarize them with the word processing / spreadsheet environment. Unfortunately, it gives them a one sided perspective from a Microsoft standpoint, and the text is very unclear on the assignments. Are there any suite-independent, clear textbooks on word processing available out there?"