Firefox, The award-winning Web browser from Mozilla is now (Firefox 2) even faster, more secure, and totally customizable to users’ online life. It’s a web browser with pop-up blocking, tabbed browsing, and privacy and security features. The Google Toolbar was integrated into the Firefox download for even more features: Google search, Traslation, Autofill, etc
tabbed browsing, Firefox 2 opens new web pages in tabs by default. Each tab has its own close button, if you accidentally close a tab, just go to the History menu to bring it back from the list of ‘Recently Closed Tabs’. You’ll never be crunched for space anymore, either.
integrated in Firefox (Google, Yahoo!, eBay, Wikipedia, etc & a list of 100s others of your favorite Web sites you can add), now, some of the search engines in Firefox 2 can read your mind and actually suggest search terms for what you’re looking for. Just start typing into the Search bar, and a drop down list of suggestions will appear.
blocking annoying pop-ups. Firefox’s pop-up blocker notifies you when pop-ups are blocked via the information bar or icon on the lower right of the screen.
encounter a Web site that is a suspected forgery (known as a ‘phishing’ site) Firefox will warn you and offer to take you to a search page so you can find the real Web site you were looking for. Protection from Spyware: Firefox will not allow a Web site to download, install, or run programs on your computer without your explicit agreement. You will be notified whenever downloading or installing software, and Firefox will always tell you what’s happening so that you can stay in control of your computer.
Integrated Google Toolbar is very complete & customizable, and no need to say it’s spy-ware & mal-ware free, it’s from Google 
Check some of the toolbar features below
Once you install Firefox, you still can personalize your browsing experience with a large collection of small pieces of software called “Add-ons”; Add-ons allow you to add multiple features to Firefox to fit your different needs or just to change Firefox look or have fun. Below are the Add-ons I recommend you get first but the possibilities you have then to customize Firefox are almost unlimited … let’s start
NoScript the security Add-on n° 1, if Firefox is basically more secure than other browsers, with NoScript Add-on, it’s simply unbeatable …
It allows JavaScript, Java and other executable content to run only from trusted domains of your choice, e.g. your home-banking web site, and guards the “trust boundaries” against cross-site scripting attacks (XSS).
Such a preemptive approach prevents exploitation of security vulnerabilities (known and even unknown!) with no loss of functionality…
Adblock Plus Annoying flashing & ugly banners & ads are easily removed with this addon
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
You simply select the element you want to be hidden and then choose which attributes of this element should be taken into account when hiding it in future. The element hiding rule is generated and added automatically.
FlashGot Powerful Add-on for all your downloads, ability to pause & restart & more …
Download one link, selected links or all the links of a page together at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers. Supported download tools are dozens, see http://flashgot.net for details. This extension offers also a Build Gallery functionality which helps to collect in a single page serial movies and images scattered on several pages, for easy and fast “download all”.
VideoDownloader Download videos & other embed elements on Web pages
Download videos from Youtube, Google, Metacafe, iFilm, Dailymotion, Pornotube… and other 60+ video sites ! And all embedded objects on a webpage (movies, mp3s, flash, quicktime, etc) ! Directly !
VideoDownloader add a small icon on the status bar at the bottom of your firefox window, and a toolbar button. Just click that and download the video you are watching !
GreaseMonkey Allows you to customize the way your favorite sites & webpages display using small bits of JavaScript, you can change their look, or even add features to, or remove some annoying parts from sites like Google, MySpace, YouTube, etc.
Hundreds of scripts, for a wide variety of popular sites, are already available at http://userscripts.org.
You can write your own scripts, too. Mark Pilgrim’s definitive Greasemonkey guide, diveintogreasemonkey.org will show you how.
There’s a warning though of some potentially malicious scripts, so be careful especially of recently uploaded/updated scripts, but that shouldn’t impede you of enjoying all the features & possibilities GreaseMonkey offers.
All Dictionaries Firefox comes with a spell-checking feature, HERE you can find all the dictionaries working with it & chose the ones you need to install.
Firefox Themes Choose from 100s of themes to customize your Firefox appearance & have fun; you might try Noia 2.0 (eXtreme) first, it’s one of the most popular & my favorites 
