Visit travel.state.gov to fill out the DS-11 application online or print it out to fill it out by hand.
Get your photo taken. Follow the passport requirement guidelines. The 2X2 inch color photo must be printed on photo quality paper. It must be taken in front of plain white or off-white background and your head must be between 1 inch and 1-3/8 inches. You should wear clothing you would normally wear and have a neutral facial expression.
Locate the nearest passport-issuing facility. Many U.S. Post Offices accept passport applications and may also require an appointment. Take all the required documentation with you when you visit the facility to apply for a passport.
Pay the applicable fee, which is $110 plus a $25 execution fee. Passports are usually shipped in four to six weeks; expedited applications results in a two to three week shipping time.