Google Operators:
For more on Google operators, visit http://support.google.com/websearch/bin/answer.py?hl=en&answer=136861.
You can do most of the functions above, without knowing the "operators," by using the Advanced Search screen. To access the Advanced Search, click the gear icon in the top right corner of the search results page then click Advanced search.
For more informaiton about how google works, visit http://www.google.com/competition/howgooglesearchworks.html.
Check out the Internet Detective online tutorial from Intute Virtual Training Suite and the handout below for more information about evaluating web sources. Also remember that snopes.com is a good place to read more about urban legends.
Another way to evaluate websites is to use a site such as register.com or GoDaddy to do a "whois" search for the site. This will show you information about who "owns" the domain.
You can also use Google to see what pages link to a specific address. To do this, simply type link: followed by the website address (with no spaces after the colon).
Want to see what a webpage looked like in the past? Use the Internet Archive's Wayback Machine. See also the webpage Finding Old Web Pages.
What's in a name? For help understanding what the different domain extensions tell about a website, visit the ISO's decoding table.