Most importantly, deferred action does not give you legal status. It only allows you to stay her temporarily and at the discretion of immigration authorities. There are MANY requirements to show you should qualify for deferred action. I highly recommend you consult with an attorney before beginning any paperwork to make sure you qualify. The two key components are that you arrived before reaching your 16th birthday and that you were under age 31 as of June 15, 2012.
This is only general information and not legal advice. For more information about your case, consult an immigration attorney. www.galindoimmigration.com