* Identify important information
* Make notes about your reactions or thoughts
* Create a study guide
* Personalize your book and make it more meaningful
* Marking a book can also be a form of artistic expression. It allows you to add your own unique touch to the book and make it your own.
* Marking a book can also be a way of showing respect for the author and the work. It shows that you have taken the time to read and understand the book, and that you have found value in it.