I'm a Kindle addict. Which comes as no surprise, I'm also a book addict and an audiobook addict. But, in particular, I am an addict of books on the craft of writing. Here are some I've found on Kindle for 99c. There's lots out there, but these are the ones I think show potential (I haven't read them all yet, but am reading How to Write a Great Query Letter at the moment).
How to Write a Great Query Letter by Noah Lukeman
Write or Die by Scott Nicholson
Publishing Exposed by Daryl Sedore
Are You Still Submitting Your Work to a Traditional Publisher? by Edward Patterson
Ask a Literary Agent by Noah Lukeman
From Words to Brain by Liva Blackburne
The Nasty Little Writing Book by M. Rovenhauer
A Book Inside by Carol Denbow
Rather than seek help for my addiction, I choose to lure you in as well, come, buy, enjoy...