You look online under USAjobs and upload your resume and current information that is required. There are also various questions you answer and once everything is complete you submit. You then wait to hear if you have been forwarded to the hiring authority. I was, and received a phone call for an interview. I was given an option of three times and chose one. After my interview I waited to hear something, I received an email with an tentative offer and called. I was given an official offer and accepted the position and started two weeks later.