English may not be the most spoken language in the world, but it is the Lingua Franca – the common language – of business, science, technology, engineering, research, trade and commerce. If you want to improve your salary and international working opportunities, it is important to know how to speak English well. If you want to learn how to speak English well, you will need a good teacher and good teaching. So I have written this 10-point guide to help you find out how to choose the best English teaching for you.