Remember, tell enough to show that you indeed have read the book, but then get on to more important parts of the report. Take a paragraph to discuss the most significant idea presented in the book. This paragraph usually is a detailed discussion of the main theme. Point out some sections in the book that seem most helpful in understanding that theme. Sometimes this section will need more than a single paragraph.
Last impressions are just as important as first impressions.
These remarks are the last works your reader will remember, so don't treat them lightly. Just as a courtroom attorney's final words are important for influencing a jury's decision, the conclusion is your last opportunity to convince readers to accept your thesis. Therefore, open this last paragraph with strong sentences that reinforce and remind the reader about what you have presented. Finish by pointing out the book's overall worth, importance, or relationship to most students. Finally, the conclusion is generally about the same length as the introduction.