diff --git a/README.md b/README.md
index 3e28edbf..39ac229e 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,12 @@
 
 Mastering Bitcoin is a book for developers, but the first two chapters cover bitcoin at a level that is approachable to non-programmers. Anyone with a basic understanding of technology can read the first two chapters and get a great understanding of bitcoin. 
 
-# Contributing
+# Published
 
-To contribute to this book, please fork and make changes to your forked copy, then submit a pull request. Or alternatively, if you cannot use the github.com pull request system, submit an Issue from the menu on the right. Major contributions will receive an acknowledgment in the preface of the book. 
+"Mastering Bitcoin" is now available in print and e-book formats by many book sellers including [Amazon](http://www.amazon.com/Mastering-Bitcoin-Unlocking-Digital-Crypto-Currencies/dp/1449374042)
+, [Barnes & Nobles](http://www.barnesandnoble.com/w/mastering-bitcoin-andreas-m-antonopoulos/1119253039?ean=9781449374044
+) and [O'Reilly Media](http://shop.oreilly.com/product/0636920032281.do). For a limited time, the book is also sold for bitcoin at the [author's site](http://bitcoinbook.info)
 
-# Purchasing
+# Source 
 
-"Mastering Bitcoin" will be available in print and e-book format in Fall 2014. To pre-order your copy, please visit:
-
-http://bitcoinbook.info
\ No newline at end of file
+The book's source code, found in this repository, is a near-final draft before the publisher's editorial process. Please do not submit changes here, instead use the [errata](http://www.oreilly.com/catalog/errata.csp?isbn=0636920032281) page on the publisher's site.