Students learn their lessons in class. Every student (sit) in the classroom and listens to the teacher. This is a way of learning. It's very (help), but is this the only way for students to learn? Of course not. There is another way to learn. Students can teach (them). For example, if you forget something when you are doing your homework, you can read books (find) the answers. Everyone can do this it is not a difficult thing.
How to teach yourself? First, you should read. Read something you are interested . As a saying goes "Interest is the best teacher." (Two), you can ask yourself questions. The questions should be about those (thing) you don't understand or you want to know. You can write down the questions. A clever student is (usual) good at asking questions. Third, you should try to answer the questions by thinking hard and reading books. If you keep teaching yourself for long time, you are sure to improve your study.