Knowing why you want to learn HTML and CSS, whether for web development, design, or personal projects, will guide your efforts. Regular practice with coding and creating web pages is crucial. Join coding communities like Stack Overflow or GitHub for support and tips. Work on real projects like building websites or contributing to open-source projects. HTML, CSS, and Javascript for Web Developers by Johns Hopkins University is an excellent starting course for web development.‎

Yes. You can start learning HTML CSS on Coursera for free in two ways:

• Preview the first module of many HTML CSS courses at no cost. This includes video lessons, readings, graded assignments, and Coursera Coach (where available).
• Start a 7-day free trial for Specializations or Coursera Plus. This gives you full access to all course content across eligible programs within the timeframe of your trial.

If you want to keep learning, earn a certificate in HTML CSS, or unlock full course access after the preview or trial, you can upgrade or apply for financial aid.‎

To effectively work with HTML and CSS, there are several skills you should learn.

1. HTML Fundamentals: Understanding the basic structure of HTML, including tags, elements, attributes, and their purpose, is essential. You should learn how to create and structure content using different HTML tags.

2. CSS Fundamentals: Learning the fundamentals of CSS (Cascading Style Sheets) is crucial, as it allows you to control the presentation and layout of your HTML content. Understanding selectors, properties, values, and how to apply CSS styles to HTML elements will make your web pages look visually appealing.

3. Responsive Web Design: With the increasing use of mobile devices, it’s necessary to learn responsive web design techniques. This includes using CSS media queries, flexible grids, and fluid images to ensure your web pages adjust and display correctly across different screen sizes.

4. Box Model: Understanding the box model concept is essential for properly positioning and sizing elements using CSS. You should learn how the margin, border, padding, and content areas of an element affect its layout.

5. CSS Layouts: Learning different CSS layout techniques like using floats, flexbox, or CSS grid will help you create complex and responsive web page layouts. Being able to position elements accurately and create multi-column designs is crucial for modern web development.

6. Browser Developer Tools: Familiarize yourself with browser developer tools (e.g., Chrome DevTools) that enable you to inspect, debug, and modify your HTML and CSS code in real-time. This will greatly assist you in troubleshooting and improving your web pages.

7. Cross-Browser Compatibility: Websites are accessed from various browsers, so it’s important to learn how to ensure your HTML and CSS code works correctly across different web browsers (e.g., Chrome, Firefox, Safari, and Edge). Knowing common browser incompatibilities and implementing appropriate workarounds is crucial.

8. Version Control: Learning version control systems like Git will help you track changes, collaborate with others, and revert to previous versions of your code. It's an essential skill for web development projects.

9. Accessibility: Understanding web accessibility guidelines and best practices will help you create inclusive and user-friendly web content. Considering accessibility standards while developing your HTML and CSS code ensures that people with disabilities can access and navigate your website effectively.

10. Continuous Learning: Lastly, keep in mind that web development technologies change over time. It's crucial to stay updated with the latest HTML and CSS specifications and best practices.‎