Warfel, T. Z. (2009). Prototyping: A practitioner's guide. Brooklyn, N.Y: Rosenfeld Media. 197 pages.
Warfel is a principal designer at messagefirst in Philadelphia with extensive experience in design research and usability. This book aims to be a concise manual on prototyping for user experience designers. It is written for a general audience, but it will be of primary value for those interested in or already working in the user experience field. Warfel argues that prototyping is an important step in the design process because it “simulates multiple states” of the final product. The book begins by describing the theoretical framework of prototyping in a web-based environment and includes tips and best-practices for various types of prototyping work. The middle of the book is dedicated to specific methods of prototyping, including pros and cons of different methods and detailed information on various types of prototyping software. Due to its recent publication date, new practitioners might find this information particularly useful. The last part of this book addresses how to test completed prototypes. This is a concise and well-written book that will be useful for any professional interested in improving their user experience design.