Is book a personal pronoun

No, the Word book is a noun, a Word for a thing.

A pronoun is a Word that takes the place of a noun in a sentence. A personal pronoun takes the place of a noun for a specific person or thing. The personal pronouns are: I, you, we, he, she, it, me, us, him, her, they, them.

Examples:

The librarian found the book for my report. It is called 'The River Nowhere'. (The pronoun 'it' takes the place of the noun 'book' in the second sentence.)

John found my missing book. He found it in the lunchroom.

You may borrow my book but give it back when you're done with it.