I'm a 23 year old student. I made $8,320 in 2008. All in cash, I did various babysitting so no w2 or 1099. How do I file my taxes?

You are self employed. You must file your tax return if yourself employed income is $400 or more. You will report your income and expenses on schedule C or C-EZ (Form 1040). This income is subject to SE tax at 15.3%. Read: Your U.S. Tax Return: Tax Filing by Self Employed Sole Proprietor or Independent Contractor