The document provides instructions for adding and customizing a Web Content Display portlet in 6 steps: 1) Add the portlet, 2) Change the portlet name, 3) Add content which includes adding a title, text, hyperlinks, images, and YouTube clips, 4) Format text, 5) Publish the portlet, and 6) Re-edit the portlet content. The portlet allows adding different types of web content like text, images, hyperlinks, and YouTube to a page.