The Kindle edition of Trichotillomania Treatment: How to Stop Pulling Hair Out and Defeat Trichotillomania for Good (Hair Pulling Disorder) by Sharon L. Bonheur is available for free right now on Amazon.
After looking around, I also found that the Kindle edition of Trichotillomania Disorder Cure: How to Overcome Hair Pulling For Life: Causes, Treatments and Workbook, Step by Step Guide Book for Kids, Teenagers and Adults by Susan Shaw is also available for free right now on Amazon.
I've never read either of these books. Heck, I've never read a book about trich. But... they are free. And anyone can read Kindle books even without a Kindle device. There's a free app for smartphones, tablets and computers. So go check it out. If you've read these books before, let me know what you think.