The document discusses prototyping tools and methods for testing designs early in the development process. It recommends starting with paper prototyping to test initial ideas and layouts. The next step is wireframing using free online tools to layout content hierarchy and flow. Visual mockups are then created using design tools to test the design. Prototypes should then be made as realistic as possible to test usability, experience and content. Testing prototypes with users early is better than waiting until late in the process with many users. The overall goal is to test designs quickly through various prototyping methods.