The first thing is personal finance. Every week or so, there always seems to be a new article in CNN, USA Today, or Yahoo about young adults struggling with debt, whether it be from credit cards or loans in general. High interest rates, hidden fees, not consolidating debt-these terms and concepts are mostly unknown to young adults and because of that ignorance, they tend to make big errors in judgment. Credit score is another big thing. A lot of young adults don't bother to check up on it to make sure there are no errors with it. Your credit score is your report card in the real world and it comes into play when you're buying a car, renting your first apartment, and even when you're getting a job. Protect that at all costs. Learn what drives your credit score down. Learn what drives your credit score up. Check up on it every now and then to ensure nothing is wrong with it.