American TESOL Institute offers online TESOL certifications to help the candidates who wish to start their career as a certified English teacher. The certification is often the most important credential for the people who want to chase their dream. It opens up a door to enormous opportunities to teach English to the speakers of other language. Since this is a unique teaching profile in the countries where English is not the first language, getting TESOL certified can help the candidates to bag highly rewarding teaching job abroad.