Okay guys, this is essential (and simple) knowledge that will improve your life. I even found you a video so you don't have to read--so pay attention!
Matt Cutts from Google gives a bunch of very useful, simple tips for searching on Google (and a few cool advanced tips). Finding price ranges and only searching one kind of sites are particularly cool to know!
Most people I know don't even know all the basic tips, so I thought I'd put this up "as a public service."