I love the format of this book - broken up into sections such as "Marker Rendering Basics", and "Illustrating Architectural and Interior Elements" - and within each of these sections, a series of questions and answers. For example, the first 'lesson' asks the question "What are the advantages of using ink line and colour markers for design presentaions?" - and goes on to discuss this - and each of these 'lessons' has a box giving suggested practice and / or tips, tricks, warnings, shortcuts etc. The illustrations are both attractive and useful throughout, and overall I found it not only a great introduction to the subject, but also very enjoyable too!