Goodreads asked John Castle:

Where did you get the idea for your most recent book?

John Castle My most recent book (my first book) is a nonfiction guide to switching from smoking cigarettes to "vaping", or the use of electronic cigarettes. The idea to write a book about them came about because the owner of a local "smoke shop" asked me to create a list of the best hardware available.

When I sat down to write the list for him, I realized that he wasn't going to really understand why he should choose one piece of hardware over another because he wasn't likely to understand what each piece of recommended hardware does.

So I decided I needed to explain the function of each recommendation. It just grew into a full book from there.

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