Buy Anya McCoy`s Homemade Perfumes Book from amazon.

It`s has descriptive photos, it`s written in a clean way and it`s practical.
Not a single wasted sentence in the entire book...
She teaches you how to extract scent in a variety of different ways....
She teaches you how to extract scent from so many, many different plants.

This book is useful to perfumers at the beginner, beginner intermediate level.
(something like 1 to 5 years)

Even if your an advanced perfumer, I still suggest you get it.
Why? Because it`s beautiful book to surf through and to lend to beginner-level friends.