Scan the info that applies to you: "Surprising Ways Hackers Can Steal Your Identity" http://www.lifelock.com/education/crimes/surprising-ways-hackers-can-steal-your-identity
If you're a Facebook fan you'll want to look at this info: http://www.lifelock.com/education/alerts/the-latest-scam/malicious-tagging-on-facebook/
Keeping informed and being careful are simply logical things to do!