I'm Pleased You Want To Improve Your English? Two Hundred Common English Idioms & Vocabulary in English. This system of language teaching was designed to be used as a simple way for teachers or students to earn some extra money by teaching English or improving their English. Some years ago whilst travelling. I found the need to be able to make some extra money to help me pay for my living expenses whilst away from home. It gave me the freedom to travel at the same time I was able to carry the tools I needed to be able to offer the locals English classes.