Firefox is one of the most customizable web browsers available. In this browser, you are able to install multiple add-ons and toolbars, all of which do something different for the performance level of your program.
If your browser has been lagging lately, or you don't feel like you are taking full advantage of your Internet connection, have a look at this tutorial. In this video, you will learn how to install and take advantage of an add-on called the "Tweak Network". Basically, this widget automatically pipelines Firefox, which in turn speeds it up.
Links you will need: