https://internationaltefltesol.com - In order to teach English abroad, most employers require that applicants have a TEFL or TESOL certification. These can both be obtained online through accredited courses. Although there are many different providers of these courses, we recommend taking a course with i-to-i TEFL. They are the world’s largest provider of TEFL courses and have a wide range of options to choose from, depending on your needs and budget.