The first you should to know before traval in THAILAND

Kingdom of Thailand

Thailand, formally the Kingdom of Thailand, is a country in Southeast Asia. To its east, lie Laos and Cambodia; to its south, the Gulf of Thailand and Malaysia; and to its west, the Andaman Sea and Myanmar. Its capital and largest city is Bangkok(Krung Thep Maha Nakhon or Krung Thep), one of the largest cities in the world.

Capital
Bangkok
Government
Constitutional monarchy
Currency
Thai baht (THB)
Area
total: 514,000 km2water: 2,230 km2land: 511,770 km2
Population
62,354,402 (July 2002 est.)
Language
Thai (official), ethnic and regional dialects
Religion
Buddhist 95%, Muslim 3.8%, Christian 0.5%, Hindu 0.1%, other 0.6% (1991)
Electricity
220V/50Hz (American and/or European plug)
Calling Code
+66
Internet TLD
.th
Time Zone
UTC +7

some info :http://wikitravel.org/en/Thailand