HOW TO APPLY FOR A NEW PASSPORT ?
You can apply for a new passport here: https://travel.state.gov/content/travel/en/passports.html
PROTECT YOUR PASSPORT
Your passport is the most valuable document that you will carry abroad. It confirms your U.S. citizenship. Please guard it carefully. Do not use it as collateral for a loan or lend it to anyone. It is your best form of identification. You will need it when you pick up mail or check into hotels, embassies or consulates.
When entering some countries or registering at hotels, you may be asked to fill out a police card listing your name, passport number, destination, local address, and reason for travel. You may be required to leave your passport at the hotel reception desk overnight so that it may be checked by local police officials. These are normal procedures required by local laws. If your passport is not returned the following morning, immediately report the impoundment to local police authorities and to the nearest U.S. embassy or consulate.
Law enforcement records show that U.S. passports are sometimes used for illegal entry into the United States, or by criminals abroad seeking to establish another identity. This can cause embarrassment to innocent U.S. citizens whose names become associated with illegal activities. To protect the integrity of the U.S. passport and the security of the person bearing it, consular officers overseas have found it necessary to take precautions in processing lost passport cases. These precautions may involve some delay before a new passport is issued.
LOOK AFTER YOUR PASSPORT
Carelessness is the main cause for losing a passport or having it stolen. You may find that you have to carry your passport with you because you need to show it when you are paying something with a credit card or the country that you are visiting requires you to carry it as an identity document. When you must carry your passport, keep it in a secure place where it won't accidently fall out. Do not leave it in a handbag or in an exposed pocket. Whenever possible, leave your passport in the hotel safe, not in an empty hotel room, and not packed in your luggage. However, while you are in Seville we recommend you to make a photo copy of your passport and use that as an ID form or your driver's license.