To prepare for a test you have to get your notes first. Your organize the notes the best way yoy can that would help you understand the material better. You go home and take an hour or two out and study the material. When you are finish studying make you a test and see if you can answer the question on the test you made without looking back at the material. If you are able to answer all of those questions correctly then you know all the material for the test for the following day.