Code wizards may be okay with the way the about:config page looks like but Firefox noobs might be quite intimidated by it. And intimidation always kills the curious cat. Here’s a plug-in you might consider trying - gui:config. It organizes all of the options into tabs, options, checkboxes and lists.
Firefox extension gui:config adds an advanced settings panel with easy access to options normally hidden behind cryptic about:config options. Once installed, the extension adds a new Advanced Settings item to the Tools menu for accessing the hidden settings. Rather than making you install the add-on to see if the settings apply to you, we'll just take a quick tour through all of the screens so you can visually figure out if you want to install it or not.
gui:config makes it easier to change preferences that can only be found in the about:config. The extension supports a comfortable way to apply changes to these options.
- The Accessibility tab adds in quite a few useful settings like middle-click paste or changing the backspace key's default setting to go back a page (an annoyance for many people).
- The Browser tab gives you options to change the amount of cache being used or when the cache is checked, letting you cache more aggressively for performance reasons.
- The Style tab lets you turn off Favicons, tooltips or disable blinking text (another annoyance).
- The Downloads tab lets you change the download directory and adjust the alert settings for completed downloads.
- The Bookmarks tab lets you configure the amount of bookmark backups that are created (usually once per day for 5 days).
- The Developing tab is probably only useful for programmers, and most people won't want to mess with these settings.