I have made the guitar contents free. I want to thank those that did make a purchase. The amount of money it generated was so minimal I decided to make it free and instead generate ad revenue. I think this is a better way.
To download the guitar contents just go to http://mokkou.jp/guitar/ and right click to save the pdf file to your hard disk. You can also go to http://acousticblog.mokkou.jp/?cat=50 for digital download content that I put up from time to time. Or click the Free Downloads link in the sidebar on the right side of the main page.