O'Reilly spreads the knowledge of innovators through its technology books, online services, magazines, research, and tech conferences. Since 1978, O'Reilly has been a chronicler and catalyst of leading-edge development, homing in on the technology trends that really matter and galvanizing their adoption by amplifying "faint signals" from the alpha geeks who are creating the future. An active participant in the technology community, O'Reilly has a long history of advocacy, meme-making, and evangelism.

At Family Christian, shopping is giving. We are America's leading non-profit Christian specialty retailer with nearly 275 locations in 36 states dedicated solely to the $4.3 billion Christian retailing market. We love carrying products that help our customers grow their faith and share it with others. But that's not all we love doing! We love giving back—and this giving isn't possible without YOU. You see, every time someone shops with us, the earnings are donated to Christian causes around the world. Behind every purchase is a smile from someone in need, thankful for your generous giving. Partnering with FamilyChristian allows you to tap into the largest brand in the Christian retailing market.

An ebook is an electronic copy of a book. You can start reading an ebook as soon as you've paid for it, so there is no waiting for delivery. Ebooks also offer the convenience of size and portability; you can store your entire library on a laptop or other device. In order to read an ebook, you need to download a small piece of free software known as an ebook reader. Ebooks come in different formats and each format has its own reader software. The format you select will depend upon your operating system (Windows, Mac, etc) and whether you would like to read on a hand held device or on your computer. For advice on selecting the appropriate reader, check our Reader Comparison Table. Ebooks have security settings which may prevent or limit printing and copying, as well as specifying how many different devices you can download the ebook to. You can view the security settings for each title by clicking the "Buy ebook" link on the ebook Details page.

Better World Books uses the power of business to change the world. We collect and sell books online to donate books and fund literacy initiatives worldwide. With more than 8 million new and used titles in stock, we’re a self-sustaining, triple-bottom-line company that creates social, economic and environmental value for all our stakeholders. We’re breaking new ground in online bookselling. We believe that education and access to books are basic human rights. That's why books sold on BetterWorldBooks.com help fund high-impact literacy projects in the United States and around the world. That's why we commit to matching every purchase on our website with a book donation to someone in need - Book for Book™ All books are available with free shipping worldwide. And in case you're concerned about your eco-footprint, every order shipped from Mishawaka is carbon balanced with Green-e Climate certified offsets from 3Degrees, a leading green power and carbon balancing services firm.