If you've spent any time looking through my Den, you've probably already noticed that many of the book titles are hyperlinks to Amazon.com. That's because my site is an Amazon affiliate. Those links let you go directly to that book's page at Amazon, get more information about it, and order it if you like. This is the policy I've tried to follow in placing links from my book listings to Amazon.com.
If a book's title is a direct link to Amazon, that means I've personally checked that book at Amazon, and the last time I checked it was in print and available from Amazon, either by normal order or special order, and the link will take you directly to that book's listing at Amazon. You can then order it right away. Please note, however, that the edition linked to isn't necessarily the same as the edition that I have. Many of my books are hardcovers which I bought secondhand. Some of these are now available only in paperback. In these cases, I've linked to the paperback edition. Others are currently available in both hardcover and paperback; here also, I've chosen to link to the paperback edition because it's generally cheaper.
If a book's title is linked and has an asterisk (*) after the title, that means that last time I checked Amazon, the book was listed as "Out of Print." This means Amazon can't get you a new copy, but they can use their used-book search service to try to find you a secondhand copy.
If a book's title is not directly linked at all, it means that either I haven't checked the book yet, or I have checked and as far as I know, the book isn't listed in Amazon's catalog at all. However, their catalog does change frequently, and I can't really keep up. If you like, you can note the title you want, use the link at the bottom of every page to go to Amazon, and use their search function to try to find and order the title.