Unless you make over $9,345, your income will not be taxed by the federal government (
http://classroom.synonym.com/much-un...-it-24328.html).
I would still file taxes every year though. It's very easy and for many individuals, you simply need to fill out a 1040EZ form and submit it electronically. If you want something even easier, many elect to use software such as Turbotax (as I have for the last fiscal year).
Every state is different. Remember you are paying federal, state, and local taxes (if applicable). The best people to talk to about this is your parents so I would consult with them first.