HTML stands for HyperText Markup Language. It is the standard markup language used for creating web pages and web applications. HTML provides the structure and content of a web page, while other technologies such as CSS and JavaScript provide additional functionality and presentation.

Here are the basics of HTML:

1. Elements: HTML consists of elements that are used to define the structure and content of a web page. Common elements include headings, paragraphs, links, images, and lists.

2. Tags: Elements are defined using tags, which are surrounded by angle brackets. For example, the paragraph element is defined using the <p> tag.

3. Attributes: Some elements have additional information that can be added using attributes. For example, the image element can have a src" attribute to specify the source of the image.

4. Document Structure: An HTML document has a standard structure that consists of a head and a body. The head contains information about the document, such as the title, while the body contains the content of the page.

5. Links: HTML allows you to create links to other web pages, files, and resources using the <a> tag.

6. Images: Images can be added to a web page using the <img> tag.

7. Lists: HTML supports ordered and unordered lists, which can be created using the <ol> and <ul> tags.

8. Tables: Tables can be used to present data in a tabular format using the <table>, <tr>, <th>, and <td> tags.

These are the basics of HTML, but there are many more elements, tags, and features that you can learn as you become more familiar with the language. With HTML, you can create simple or complex web pages and web applications, and it is a critical skill for anyone interested in web development.