Great Javascript: Level 1 will teach you the fundamentals of JavaScript, beginning with adding scripts to your web page, taking you through validation, working with web page elements, to an understanding of objects and how JavaScript handles memory and variable storage. By the time you're done, you'll be more than a casual scripter: you'll be able to take control of your web pages, and bend them to your will.

Throughout the course, you'll build working scripts, move to external JavaScript files, interact with web pages using the Document Object Model, parse strings, and even dig into regular expressions. This is no silly tutorial full of "Hello World" alert boxes, either. From the first section, you'll be writing code that is functional, usable, and will help make you a better web developer.