MDN HTML
MDN CSS
Summary
The Mozilla Developer Network website has a ton of information on HTML and CSS. For HTML, they provide learning tutorials. They allow you to go through the HTML basics starting with an introduction on how it works and then the more you advance, you can learn more about other ways to add to a web page. For CSS, they teach you the building blocks on how to style your web pages. They explain what CSS is to you and then show you the syntax on how to write valid CSS. You would use these resources when you're not familiar with or creating or writing elements, adding pictures or videos, or styling your web pages. The pages on this website provide a lot of helpful information to help guide you. In my opinion, a trusted resource can be websites that provide useful tips when it comes to programming help. Using Google to help with your coding can help you learn as long as you take the time to understand what is going on in the code and why it's working the way it is. Learning from other students' codes and modifying it to see how it works has also helped my coding experience in the past.