SOURCE: www . bangkokbits . com/tips/basic-thai-language-the-only-12-words-and-phrases-you-need/
If you plan to visit Thailand it is not necessary to know a great deal of the local language as English is widely spoken in most of the popular tourist areas.
To get started take a look at this list of 12 essential words and phrases that will help you to get by in many everyday situations, such as asking directions to the bus station, shopping at the market, or ordering a meal in a local restaurant.
However, for those planning to stay on and work as an English language teacher, having a grasp of the local language can really help you to feel part of the local community.