what is the most effective rout to take?

Hi everyone

I am a degree trained Early Childhood teacher living in Jamaica who would love to get the opportunity to teach aboard but need help as to the best rout to take. Which country is best to teach in ? Seeing that I am from a different country and culture will there be any help for me? Do I need to do a English certification course? In short how does this process  work and are there any time lines?