Watch where you obtain your visas. Some agencies charge outrages prices for the service - shop around. Its always best to do it yourself. If you plan to go make sure you arrange through a reputable agent. Too many can't follow thru on arrangements and tours.
Applications are available at major post offices or courthouses.
The travel documents remain valid for ten years. The busy season is March - September. Expect four to six week wait. Begin the passport renewal process now if you see that your passport is about to expire anytime soon, as it can take weeks to get a new passport. If you are taking an international trip, make a copy of your passport, airline tickets, itinerary, hotel phone numbers, and prescriptions and leave them with a close friend or relative.