The Travelers' Guide to Asian Customs and Manners: How to Converse, Dine, Tip, Drive, Bargain, Dress, Make Friends, and Conduct Business While In Asia, by Elizabeth Devine (TPB, 1998, $3)
After reading just a few pages here, I could see how complicated the customs of other cultures are. Included here is information for China, Hong Kong, India, Indonesia, Japan, Malaysia and Singapore, Nepal, Pakistan, the Philippines, South Korea, Sri Lanka, Taiwan, Vietnam, Australia and New Zealand. (Wow, that covers a lot of ground!)
Very well organized, very complete. 352 pages. Look for it in the travel section, avail. 9/16.