This is possibly the best book I have purchased for DMing! The content is very useful and empowering, with great ideas for simplifying and organizing your D&D session preparation and play. I really appreciate how the material is presented, too: concise, to the point, well-organized, with solid examples and practical checklists. The book is not long, but it's rich with ideas, and very easy to read. I look forward to applying some of its principles right away!