Use those extensions (Tip 23)

[pioneer]

Many applications offer extensions that can greatly improve your computer efficiency. For example, because the Firefox browser is open source, there are many cool extensions you can tack on to it. Adding a dictionary search will save you time. Highlight any text and automatically look it up in the online dictionary of your choice. Another Firefox extension, known as FlashGot, will equip your browser with a download manager to decrease download time.

source: ririanproject.com