Use a format that works for you. Your notes may take on the form of a bulleted list of information. You might draw yourself a timeline of events so that you can see the order that things happened and not just a list of events. You may draw a kind of flow chart to emphasize a sequence. Or you might do a more traditional outline with big ideas at one level and then supporting ideas indented underneath. Ultimately, the notes are your study aid, so it’s best to write them in a way that makes sense to you.