> 1-3 pages of notes per 100 pages of text is a good goal to shoot for; more than that is often too much. I often used a technique of transforming a book into

> 1-3 pages of notes per 100 pages of text is a good goal to shoot for; more than that is often too much. I often used a technique of transforming a book into a mindmap, it's much more visual and readable than a simple plain text with notes.