Some teachers and mothers say, "Don't mark your books. Marking them is a sign of disrespect for the book and the creator of those books." This is wrong. How can one appreciate those books if they wouldn't savor and taste the thoughts, and play with the words if there is no interaction between the writer and the reader? Marking the books is interaction between the reader and the writer. Books must be absorbed in the bloodstream to be of long and good use.
One writer says (Book of Essays) that "There are three kinds of book owners."
The first has all the standard sets and best-sellers unread, untouched (this delude individuals owns wood pulp and ink, not books).
The second has a great many books, a few of them read through, most of them dipped into but all of them as clean and shiny the day they were bought.
The third has a few books or many. Every one of them dog-eared and dilapidated, shaken and loosened by continual use, marked and scribbled in from front to back (this man own s books).
How people mark their/the books intelligently:
1. underlining of major points, of important or forceful statements
Most students underline with red pens, especially those the teacher asks to memorize.
2. vertical lines at the margin to emphasize a statement already underlined
Many researchers do this, also those who study for a thesis. They write in the margins and make explanations.
3. star, asterisk, etc. at the margin to be used sparingly, to emphasize the ten or twenty most important statements in the book
In my case, I do this and draw many stars. If it is starred, the text/illustration is very important.
4. numbers in the margin
This helps to show how important the facts are. Numbers usually correspond to text explanation and meanings.
5. numbers of pages in the margin
This can be a list for review pointers and homework.
6. circling of keywords and phrases
I usually do this. This helps a lot.
7. writing in margins for the sake of recording questions
Writing in margins can be reminders if there are questions, and more facts needed to support data gathered from the reading material.
8. shading with different colors
With colors or no colors, shaded texts mean to be important. This is easy food for the memory, like creating images.
9. The use of markers like post-it, colored sheets, and tags
This is popular in this present time; there are varied sheets/posts for reminders.
10. Rewriting important words in the empty pages of the book, and getting a support notebook/pad to collate the most needed/important idea.