Well first, if you're having trouble with pronunciation you should find a dictionary or website that includes pronunciation guides and learn how to read them. Those look like this: [dahy-uh-fram] (Pronunciation for Diaphragm) For sure, reading is one of the best ways to improve your vocabulary, but you must be careful that you read material that isn't too high above your reading level, otherwise it can be frustrating. This may sound silly, but have you tried reading childrens books? Books aimed at children or even a teenage readers will have simpler vocabularies and simpler sentence structure. Just be careful not to aim so young that you get a book that is 90% illustration and 10% reading.