Get vaccinated for yellow fever. This vaccination is required before you can obtain the visa for entry to Togo. The U.S. Centers for Disease Control and Prevention's website (see References) provides a comprehensive list of approved vaccination clinics throughout the country. Keep the vaccination certificate that the clinic gives you.
Book a round trip flight. Do this before you apply for your visa, as your itinerary will be necessary for visa approval. You can easily book your flight online through travel sites such as Dohop (see References).
To get a visa, send your passport, flight itinerary, three passport photos, yellow fever vaccination certification and the necessary fees to:
VisaHQ.com
Embassy Row
2005 Massachusetts Ave. NW
Washington, DC 20036
Do this a minimum of 10 days before your flight date to allow for the five day processing time and any potential delays.
Carry a copy of your vaccination records and passport with you at all times while in Togo, as suggested by the U.S. Department of State, as officials may ask for these documents at any time during your stay.