If you are interested in teaching English, the best available location would be nearby ESL schools, or English as a Second Language. You can then teach immigrants english in an English-speaking country.
The best way to learn American English is to live in the states. When you are surrounded in American culture you will learn the language quicker.
An ESL job is a job in a English as a Second Language learning facility, where immigrants who understand minimal English can learn and understand the language.
What is the best source to learn the IT in English language
Learn English x
Learn better f--king English, that's what!
English, Spanish, French
Learn English then ask again. Have a nice day.
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One can learn to take English lessons from English tutors or at English classes at local community colleges or universities as well. Those are the best options.
http://www.espindle.org/ This is the best website I have ever seen for learning english.
best way is to live in an English language country for a few months
Not much. In this economy, you'll need to learn the language first.