ABCNews -- College can be an exciting time for young people but, for many, assuming greater financial responsibility for their lives can be fraught with pitfalls. Mellody Hobson, "Good Morning America's" financial contributor, went to the University of Chicago this week and took questions from students about loans, savings, credit cards and spending. She also gave them tips on how to develop good financial habits. Start Saving, Hobson Says One of her tips to students was that they start saving. While she acknowledged that students generally find it hard to save because they don't have a lot of extra money, she encouraged them to put some aside, even a little bit at a time. "Let's say you have a job and you're making $500 a month," she said. "If you...