General

South-West China, Lonely Planet Publications, 1998.

Guizhou by Gina Corrigan, Odyssey Guide, 1995

Fodor's China (New York, NY, 1998)

Currency Exchange

http://www.xe.net/currency/

Health Precautions

http://www.cdc.gov

Travel Information

http://fodors.com

Weather

http://www.wunderground.com

http://cnn.com/WEATHER/

The Odyssey book is excellent, though a bit hard to find. The Lonely Planet Guidebook is also worth getting before your travels.