Google
Google: Understanding Search Engines: Keys to Search City
A presentation from Google on how the Google search engine works and how to structure a search query. For more advanced users.
Other
The Open University: Filtering Information Quickly
It is easy to search the web for pretty much anything these days, but coping with the amount of results that come back can be a challenge. Being able to handle information efficiently is a skill which will stand you in good stead, both...