Without digging in quite as deep into nitty-gritty details like a book that focuses on how to write your own Firefox extensions, this book mostly teaches you the big picture – and how to make it shine a little brighter through your Firefox window.

It does show you enough of the basics about creating an extension. So if you already know JavaScript, XML, and a few Firefox specific things – you can do it.

This book seems neat because it covers some really useful technical details – and it has a lot of breadth.