Alright, I'm considering taking a job (English as Second Language teacher) in one of these places. However, I am completely ignorant to the lifestyles and cultures of them. I have no clue which I would prefer. Some questions I have about all of them (please answer whatever you know about any of the places, it would be great help!):

1 - Would the language barrier be a big issue? (Me only knowing English)
2- Where is the best place to live for the least amount of money?? (I would like to save as much as possible while living there, I will get a free furnished apartment and free airfare, so just general living costs such as food and entertainment/clothing...)
3- What are some do's/don'ts of the countries?
4- What is the usual climate and temperatures for these places?
5- Any other comments or advice?

Thank you in advance!