Websites and Online Courses:

1. MDN Web Docs: HTML Basics - Provides comprehensive documentation and tutorials for learning HTML from scratch.

2. W3Schools: HTML Tutorial - Offers a beginner-friendly tutorial with interactive examples and exercises.

3. Codecademy: Learn HTML - Interactive course covering HTML fundamentals along with practical projects.

4. freeCodeCamp: Responsive Web Design Certification - Includes HTML lessons as part of a broader curriculum covering web development.

5. Coursera: HTML, CSS, and JavaScript for Web Developers - A specialization course by Johns Hopkins University on Coursera covering HTML along with CSS and JavaScript.

Books:

1. "HTML and CSS: Design and Build Websites" by Jon Duckett: A beautifully designed book with clear explanations and visual examples suitable for beginners.

2. "HTML5 Pocket Reference" by Jennifer Niederst Robbins: A concise reference guide for HTML5 tags, attributes, and APIs.

3. "Learning Web Design: A Beginner's Guide to HTML, CSS, JavaScript, and Web Graphics" by Jennifer Niederst Robbins: Covers HTML along with CSS and JavaScript, making it a comprehensive guide for front-end development.

YouTube Channels:

1. Traversy Media: Brad Traversy covers a wide range of web development topics including HTML with clear and practical tutorials.

2. The Net Ninja: Offers beginner-friendly tutorials on HTML along with CSS and JavaScript.

3. Programming with Mosh: Mosh Hamedani provides in-depth tutorials on web development topics including HTML for both beginners and advanced learners.

Practice Websites:

1. CodePen: A social development environment for front-end designers and developers to showcase their HTML, CSS, and JavaScript creations.

2. JSFiddle: An online code editor for web developers to test and share HTML, CSS, and JavaScript code snippets.

3. GitHub: Explore HTML projects on GitHub and contribute to open-source projects to gain practical experience.

Additional Resources:

1. HTML Validator: Use online HTML validators like W3C Markup Validation Service to check the validity of your HTML code.

2. HTML Cheat Sheets: Refer to HTML cheat sheets for quick reference and reminders of HTML elements and attributes.

3. Web Development Communities: Join online communities like Stack Overflow, Reddit's r/webdev, or Discord servers focused on web development to seek help, share knowledge, and collaborate with other learners.

By leveraging these study materials and resources, you can effectively learn HTML and become proficient in creating web pages and applications. Remember to practice regularly and build projects to solidify your understanding.