You already know the basics of web surfing and email. Firefox and Thunderbird: Beyond Browsing and Email makes you a power user by customizing and configuring your web browser and email.
This book gives you a path through Firefox's many options, explaining which should be adjusted, which shouldn't, and how to locate the many hidden preferences. Learn about Thunderbird's built-in spam filters, calendar, and customizable layout and toolbars.
Want to do even more? If you're comfortable with basic web scripting and style sheets, the later chapters of the book show you how to create your own Firefox themes and extensions.
Plus, go to Que's web site for bonus chapters on contributing to the further open-source development of Firefox and Thunderbird.
Part I Making Firefox Yours
Part II Extending and Modifying Firefox
Part III Using Thunderbird
Part IV Web Development and Firefox Extensions
Part V The Way of Mozilla for Programmers