As far as visa requirements go, while countries may require a degree, I don't know of any that require you to have a TEFL certificate. Although TEFL certs won't help with visa requirements, they will make your life much easier as a teacher. Intensive TEFL courses, whether they be CELTA, Trinity, or any other course, will teach you how to teach English. Knowing the language and being able to teach it are two different things. There's nothing worse than having a student ask you to explain something and for you to not know the answer.

These courses will teach you things such as grammar, how to teach vocabulary, language level, popular activities, different methods, and more. Not only do they help you learn about what to do in the classroom, the course trainers can give you advice about which countries to teach in, what to look for in a contract, and may even offer job placement. They're a great way to get your foot in the door. If you decide to make teaching English your career, you should try to get higher qualifications as well, such as a PGDE or MA.

If you want to take a TEFL course, remember that you'll need at least 120 hours of class and at least 6 of teaching students. If you can't take a TEFL course due to time, money or other reasons, don't worry, it's not the end of the world. There are plenty of other ways to learn about TEFL. Try visiting your local library or talking to a teacher to get started. Online forums are also a great way to get ideas.

Sharon de Hinojosa (naturegirl321) has lived and worked (mainly teaching English) in the US, Scotland, Spain, the Czech Republic, China, Korea, and Peru. As well as teaching short-term in Venezuela and Taiwan.

She has created The LA Job List http://www.thelajoblist.blogspot.com which lists schools, institutes and universities in 19 Latin American countries which offer English teaching positions.

Since living in Peru since August 2006, she wrote The Ultimate Peru List http://www.theultimateperulist.blogspot.com - With 60 pages it's a comprehensive guide for those living in or moving to Peru.