Hi G, Thanks for your

Hi G, Thanks for your comment. Glad you like the Kindle version (and we also have the ipad version). We added the PDF version because a number of folks had asked for a way to get it on their computer. The good thing is that when you puchase from our store you get ALL THREE versions. The PDF version will open within a browser for reading and can be downloaded to the local computer hard disk for viewing off-line or printing a copy. Thanks again, Paul