A federal law allows you to get a free credit report from each of the 3 bureaus once a year. This is the only authorized free credit report site. <a rel="nofollow" target="_blank" href="
https://www.annualcreditreport.com/index.action">https://www.annualcreditreport.com/index.action</a>. You can get one report from each bureau, if you stagger the reports and get a different one every 4 months, then you get almost year round monitoring for any strange or unauthorized activity.
Other sites (including the credit bureaus) may try to sell you additional services or may use your personal information to send you targeted advertisements. You can use them but buyer beware.
And of course, there are commercial identity protection services you can subscribe to for a couple of years, I can't recommend any specific company over any other company.
