Answer:
What is it..A book is a thing that all people read to get ideas and knowledge on what they want to know .
Which part of it is not yet clear to you...The Index.
what is it not...This is not a thing that we had to destroy and ignore.
How does it benefits students like you..As a students we all obligated to read our books to understand the lessons.. And also to have and see more examples and study it.
