I have a ton of great efficient Googling tips, but my best one thus far had been Googling from your browser. No longer — the new Gmail Lab that lets you do Google searches directly from Gmail is my new favorite fast Googling tip.
That's right, just enable this Lab in Gmail's settings, and you'll be able to do your Google searches without opening up a new tab or window.
You also won't have to copy paste the search results either, when you find what you're looking for — search results open in a chat-like window in Gmail and then ask you if you want to email or chat the search result. Brilliant.