This tutorial is all about how to configure,secure and optimize Firefox browser.What you have to do is to just open your firefox browser and in URL type below commands.It is possible to configure your browser to work according to your need and requirements.

About:About
This is a list of “about” pages for your convenience.

Some of them might be confusing. Some are for diagnostic purposes only. And some are omitted because they require query strings.

about:about
about:addons
about:buildconfig
about:cache
about:compartments
about:config
about:crashes
about:credits
about:home
about:license
about:logo
about:memory

about:mozilla
about:newt
ababout:permissions
about:plugins
about:privatebrowsing
about:rights
about:robots
about:sessionrestore
about:support
about:sync-log
about:sync-progress
about:sync-tabs

Note: about:config    is used to configure your browser settings. Like optimes your browser for faster network coonectivity,remember passwords,cache memory,cookies and many more.

So about:config   must be used carefully.If you are not aware of what you are doing please dont do it.