Find Educational documents with Google

This is one little trick to dig up some great educational content is to search .edu domains (which belong to educational establishments). Let's say you're interested in learning C++ programming and you would like to see "Introduction to C++" types of documents/presentations. All you have to do is perform a search query similar to the following: site:edu intitle:"Introduction to C++" filetype:pdf, and there you go. A variation of the search query above, to include additional file types, is as follows:site:edu intitle:"Introduction to C++" filetype:pdf | filetype:ppt | filetype:doc.