This here is an example of a study guide utilized for myself for a class in computer programming. After a semester of notes, it can become extremely difficult to fit everything on one page. Here is an example that showcases a few ways you can master study guides, including playing with margins, columns, spacing, and emphasis.
My favorite part of note-taking is drawing emphasis to certain crucial sections, definitions, and the like. Emphasis is the key to remembrance after the fact. Plus, its a fun was to be uniquely expressive and creative with your note-taking. There are multiple methods for drawing emphasis, many of which you can customize to match your personal needs and styles.