http://www.lookstogoodtobetrue.com

Links from lookstogoodtobetrue.com include:
US Postal Inspections Service
FBI
Internet Crime Complaint Center
Monster.com - Tips for a safe job search
Escrow.com
Ebay.com Security Center
Western Union Consumer Fraud Awareness
National Consumer's League Internet Fraud Watch
Federal Trade Commission
Direct Marketing Agency Consumer Assistance
Urban Legends Reference Pages

http://www.fakechecks.org

http://www.donotcall.gov

The biggest thing to remember if you pick up the phone is that you can hang up the phone.  There is no reason not to be rude to these people.

The government, especially the IRS, does not communicate by e-mail.

Most government sites end in " .gov ".

Do not open any e-mail where you do not know the sender - just delete the e-mail without opening it.

If you are making any purchases from internet sites, follow the rules of that site.