Even the most famous book cannot take the place of your short notes.When we are studying, then any study is started with good books and its syllabus. It is very rare that we get all the syllabus in a single author's book and for this, we sometimes buy many books and read a little bit from each book. Along with this, nowadays people are also studying through YouTube videos and in this case also when they watch the video, it seems that they are understanding everything and now everything is remembering to us but it does not happen in reality, After some time we are able to remember only a few points of that video. The same goes for books, so it is advisable to make notes.
But with people tend to be careless in making short notes and start bothering themselves a few days before the exam. No matter how much we read but one last revision, brings us confidence and that is the need for short notes for the last revision. Short notes of important topics from the very beginning act as a key before the exam.