You can buy each of our titles currently in print from its own page on this site, of which the latest publications are featured on the home page. We offer a range of payment options including MasterCard, Visa, American Express, Discover, and PayPal.
Each publication page provides buy buttons for as many as are appropriate of print, Kindle, EPUB, and Chrome web-app editions.
Please note that due to Apple’s license terms you cannot buy our iPad, iPhone, or iPod Touch app editions directly from us. Instead the pages for titles published in app format provide links to the Apple iTunes Store where you can purchase and download applications for your mobile device.
We deliver worldwide, by Media Mail in the US and by First Class Mail overseas. If you need a faster delivery option please select it in the shopping cart checkout. Sales Tax is charged customers with an address in New York state.
We hope you enjoy our publications and are most grateful for your feedback, especially in reviews and ratings posted in the iTunes Store, Chrome Store, on the publication’s page on this site, or on our Facebook page.
We accept purchase orders from libraries and the book trade on terms listed separately.