Firefox
Configuring Software - firefox
Of course, you'll need a web browser, preferably one with ad blocking capability. You can choose to build firefox from source or install a binary distribution. Since there are so many releases, I recommend the binary. Before you emerge, be sure to check your USE flags.
$ emerge -av firefox-bin
Once the emerge completes, you may need to configure a few options. To enable adblock plus, choose Tools -> Add Ons from the menu, then click "Browse all Add ons". Enter "Adblock" into the search box on the page that loads, and click on the returned result. Click "Install Now" to enable it. You'll need to restart Firefox to complete the installation. Once it starts again, be sure to add a subscription to keep your ad blocker up to date.
Another thing you may want is adobe flash support. In order to do so, you'll need to agree to the license. This is done using /etc/portage/package.license.
$ sudo nano -w /etc/portage/package.license
Make sure the following line exists in the file:
www-plugins/adobe-flash AdobeFlash-10.1
Now we can emerge adobe-flash.
$ sudo emerge -av adobe-flash
Once the emerge has completed, you should have a working adobe flash plugin next time you start firefox.