Checking your credit reports periodically is a good way to protect yourself against identity theft. It will also alert you to errors that could hurt your credit score.

You're entitled to one free credit report every 12 months from the three main credit-reporting agencies, Experian, Equifax and TransUnion. To request your free credit reports, go to www.annualcreditreport.com.

Don't be misled by similar-sounding websites that claim to offer "free" credit reports. They're usually a backdoor effort to sell you a credit-monitoring service or other product.

You can order all three credit reports at the same time or order a different one every four months. The advantage to the latter strategy is that you can track changes in your credit report over the year, creating your own credit-monitoring service.

You can order your credit reports online or through the mail. To have them mailed to you, call 877-322-8228. You'll need to answer some questions to verify your identity.

You'll have to pay an extra fee — usually about $8 — to get your credit score, but most of the time, it's worth the cost.