If you own a K10D or K100D, we have a Book dedicated to each camera. We have added the e-book for each camera that can be purchased for only $15.00 and can be downloadable immediately after payment. It doesn't get much faster that that.
You can buy the printed books here: http://www.pentaxdslrs.com/
You can buy the e-books here: http://www.k10dbook.com/Purchase%20PDF.htm
Thanks for reading,
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