Wireframing

This one walks you through low to high fidelity wireframes, information architecture, and user flows with a clear spectrum from paper sketches to interactive prototypes. You get concrete guidance on when to use each fidelity level, which matters because jumping to high-fi too early wastes time. The source covers annotation techniques, the actual elements you'd include at each stage, and treats wireframing as a communication tool first and a design artifact second. Useful if you're working with designers or doing product work where you need to sketch out interfaces before committing to builds. The examples distinguish between stakeholder workshops, developer handoff, and user testing contexts.