Progressive disclosure defers advanced or rarely used features to a secondary screen, making applications easier to learn and less error-prone.| Nielsen Norman Group
Tutorials interrupt users, don’t necessarily improve task performance, and are quickly forgotten. Contextual help signals can avoid these pitfalls but require unintrusive ways to activate.| Nielsen Norman Group
Our research shows that tutorials don’t make users faster or more successful at completing tasks; on the contrary, they make them perceive the tasks as more difficult.| Nielsen Norman Group
People rely on menus to find content and use features. Use this checklist to make sure your menus do their job.| Nielsen Norman Group
Open-ended questions result in deeper insights. Closed questions provide clarification and detail, but no unexpected insights.| Nielsen Norman Group
Direct-manipulation UIs support interaction with visible objects of interest via physical, reversible, incremental actions that receive immediate feedback.| Nielsen Norman Group