All in one place Web Based resources for traveling:
AirConsumer.dot.gov - A web site to compare the services of various airlines. Also a good place to get unbiased information.
CIA World Factbook - A thumbnail review of potential travel destinations. Can help you determine if you need kidnapping insurance.
Centers for Disease Control Home Travel Information Page - Find out what shots you need and what you should be cautious of. I went to the Philippines, got the suggested tetanus shot before I left. I then proceeded to gash my head on a rusty nail in a jeepney near Robinsons Mall Ermita.
Kayak - Good site to search many travel sites for best airfare and hotel.
National Parks Service - Good site to find attractions to visit in the USA.
The Weather Channel - Nice to know what it will be like during your visit.