Favorite Query Searches 

• Filetype: returns only results with the given filetype - especially useful when searching for PowerPoints filetype:ppt or filetype:pptx and SMART Notebook Files  filetype:notebook
• Site: returns only results within the given site - especially useful when searching for content within a site or by a domain like .edu or .ir (Iran)
• Cache: returns Google's copy of the site 
• Related: returns sites that are similar to the one you typed in

Learn More

• Google Web Search Classroom Lessons and Resources - http://www.google.com/educators/p_websearch.html
• Explore Google Search - http://www.google.com/landing/searchtips/
• List of Internet Top Level Domains - http://en.wikipedia.org/wiki/List_of_Internet_top-level_domains  
• Google Language Tools: http://www.google.com/language_tools?hl=en

To find the original PowerPoint go to Patrick Cripsen's website: http://netsquirrel.com/powerpoint/index.html and search for the Google 201: Advanced Googology presentation.   Here is the link to the version current as of March 2011: http://netsquirrel.com/powerpoint/powerpoint/google_201_20110303.ppt.zip