AirPort in Bangkok is Bangkok International Suvarnabhumi Airport (BKK). ATMs and currency exchange counters are available 24 hours at Bangkok Airport. Car hire via companies, food, pharmacy, wireless internat are available at Bangkok Airport.
Bangkok immigration: Consult Thai Embassy or Consulate in your country if you will need Thai Visa before travel to Bangkok. Apply via them for non-immigrant Visa to Thailand. The visa will be valid for 90 days.
For one year stay and work, apply in same method and A company in Thailand, who would employ you will submit an application to the Immigration Bureau.