When I was in my mid 40's, I joined AARP. At that time, I needed to learn a lot about elder care since my mother had died and my dad was seriously ill. (He died in 2002.) I figured that reading the print version of the AARP Magazine was the best way to learn the language of retirement (e.g., Medicare, Medicaid, etc.), and to learn about the issues related to elder care.
the magazine has some really interesting and inspirational articles, like the recent interview of the actor Morgan Freeman. During the years, I've subscribed to AARP's various e-mail newsletters and RSS feeds. The AARP web site recently published a good article about identity theft, titled Block Your Credit Reports to Prevent ID Theft.
If you are unfamiliar with the subject of identity theft, or if you want simple clear descriptions (like the difference between a Fraud Alert and a Security Freeze), then this is a good starter article. The article includes sample letters for users to request a Fraud Alert from one of the three national credit bureaus. The article should have included toll-free phone numbers for the three credit bureaus, but didn't.
As I mentioned, this is a good starter article. While the article doesn't tell you everything, it provides the basics in an easily readable format, so a consumer can place a Security Freeze on their credit report.