The first section of a book is called?

Answer 1

Chapter 1

At first you start out with the cover, then the title page, then the Index or Contents (whatever you prefer to call it), Then you've got your dedication page, then the first chapter.

Not quite. it is the foreword, preface or prolusion.

Answer 2

a title page

The first section is indeed the title page, but then it can also have a prologue which is like a beginning section or paragraph to introduce the main idea or a thought.