This tutorial teaches how to add an image slider to a portfolio website using the Easy Slider jQuery plugin. The steps include:
1. Copying code files and downloading jQuery.
2. Inserting the jQuery and Easy Slider code onto the page.
3. Adding styles to control the slider appearance and navigation buttons.
4. Making final customizations like adding rollover effects and changing the slider orientation.
The end result is an animated image slider that can showcase a designer's work in an engaging format.