There are two types of code you'll mainly be using:
Hyper Text Markup Language: is used to mark up the content of the webpages, designating certain bit's of text links, headings etc. It's marked up using < > brackets - e.g. <h1>heading</h1> shows that the text is a heading.
Cascading Style Sheets: is used to tell the browser how to display the various elements in the webpage - e.g. "h1{color:black}" tells the browser the headings should be displayed black.
Whilst HTML and CSS can be combined in one document it's usual, and preferable, to have a HTML document that links to a separate CSS document.
