1) FREE READ: The four TDG books are available for a free read from this website. Click "Books" in the main menu, find the book, and start reading on your monitor or tablet.
2) KINDLE/KOBO: You can buy the TDG e-books in these formats from the Kindle and Kobo stores.
3) EPUB Files: You can buy the TDG ebooks in the EPUB format. Make sure your ereader can handle the EPUB format. The price is US$25.00 to gain EPUB access to all four TDG ebooks. Click
Please consider that you can get these ebooks a little cheaper with the Kindle and Kobo options.
Sorry, no printed books. My contribution to a better environment.