Often, I remember a particular website has the information I need but, when I got to find it, it's buried. That's where Google's :site search comes in.
When you start a Google search with :site you can force it to search only one website. For example - site:www.foodnetwork.com Cupcakes will only search for the word cupcakes on the Food Network's website.
This is an easy way to target your results to one area. Very helpful when doing a search where you have a pretty good idea what you need.