Moodle supports a range of different resource types that allow you to insert almost any kind of web content into your courses.
Creating a text page
This type of resource is a simple page written using plain text.
A number of formatting types are available to help turn your plain text into nice-looking web pages. More about these text formats
Creating a web page
This sort of resource makes it easy to develop a complete single web page within Moodle, especially when you are using Moodle's WYSIWYG HTML editor.
Linking to a file or web site
This resource type allows you to link to any web page or other file on the public web. It also allows you to link to any web page or other file that you have uploaded into your course files area from your own desktop computer.
Normal web pages are simply displayed as they are, while multimedia files are dealt with more intelligently and may be embedded within a web page. For example, MP3 files will be displayed using a built-in streaming player, as will movie files, flash animations and so on.
There are many options for displaying your content in popup windows, framed windows and so on.
In particular, if your resource is a web application or other type of content able to accept parameters, you can choose to send information to your resource such as the user's name, their email, the course they are currently in, and so on.
Displaying a directory
The directory resource can display a whole directory (and its subdirectories) from your course files area. Students can then browse and view all those files.
Inserting a label
Labels are a little different from other resources because they are text and images that are actually embedded directly among the other activity links in the course page.