The text discusses the importance of wireframing in web app design, emphasizing its purpose beyond aesthetics. It highlights six key principles to keep in mind when creating wireframes: everything has meaning, consistency is crucial, speed and exploration are essential, real data should be incorporated, technology limitations should be considered, and whatever works is the ultimate goal. The text also mentions the importance of Gestalt principles, consistency, and exploring different solutions to find the best one. Additionally, it provides resources for learning more about wireframing and design, such as Andy Rutledge's series on Gestalt principles and Leah Buley's mantra "good design faster".