JQueryIntroduction

Summary
This is an introductory tutorial on the jQuery library for JavaScript. It's on of the most popular and useful libraries to learn.

Introduction to jQuery
What is jQuery and why should you use it?

jQuery is designed to simplify the process of coding with JavaScript. It builds on top of JavaScript and is used to interact with elements in your HTML page. It’s a lot easier to read than JavaScript and you can achieve a lot with just a few lines of code. Most common jQuery effects are drop down menus, drag and drop elements, animations and form validation.

Download and  of the tutorial.