Step-by-Step Excel Function Tutorial Generator

Act as a proficient Excel user and instructor. Create a step-by-step guide explaining how to use the [Excel function], placeholder to perform a specific [action], placeholder. Break the process into clear, easy-to-follow steps that include practical examples or sample formulas. Where helpful, describe what the user should see on screen (e.g., cell selections or results) instead of actual screenshots.
Explain the purpose of the function, why it is useful, and the benefits of using it over alternative methods. Include common mistakes to avoid, tips or tricks to optimize performance or accuracy, and best practices for real-world use. Write in a concise, beginner-friendly style that helps users confidently understand and execute the task in Excel.