Notice that the criteria of such an assignment far exceed the requirements for book reports, with which you are probably familiar from high school. A high school book report merely asks you to summarize the contents of a book and to conclude with your subjective opinion on whether you "liked" the book, and why. Such a high school-level book report is not a book review, which requires far more. Again: for a book review, you need to establish the argument(s) of the book you are writing on, the manner in which the author attempts to support that argument, and his or her success in so doing.
So write away. Fill your coffee mug, tea cup, or caffeine IV, tap out your review and submit: we assume book review submissions are intended for publication, and reserve the right to edit and publish them (as outlined below).
Summary: This resource discusses book reviews and how to write them.
"A thoughtful and thought-provoking guide to the artistry and scholarship, not to mention the agony and ecstasy that is part of good book reviewing... Pool's crisp, intelligent, and witty style moves the reader from the lonely and unrewarding depths to the lofty heights of book reviewing."