This educational post, part of the HTML-101 series, explores the fundamentals of HTML comments and file naming conventions essential for web development. The author, a beginner learning in public, explains how HTML comments work, their syntax, usage examples, and critical limitations such as security concerns and nesting restrictions. It highlights that while comments are not rendered on webpages, they are still sent to browsers and visible through developer tools, making them unsuitable for sensitive information.

The article also covers standard HTML file naming practices including lowercase usage, hyphen preference over underscores, and common conventions like 'index.html' for homepages. Comparisons with CSS and JavaScript comment styles are included for multi-language context. The piece emphasizes learning through documentation and community feedback, encouraging best practices for code clarity and collaboration.

This resource is valuable for new developers seeking structured guidance on foundational HTML principles and professional coding standards.