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Rails Tutorial book (online vs. PDF)

Apr 7, 2011 • posted by Michael Hartl

Regarding the recent changes to the Rails Tutorial book due to the release of Rails 3.0.6, one reader asked if the changes applied only to the online book or if the PDF book has been updated as well. This is a reasonable question; the answer is that both versions of the book are produced from the same source file, so they are always in sync by construction. If you purchased the Ruby on Rails Tutorial PDF or the PDF/screencast bundle, simply search through your mail program for "Ruby on Rails Tutorial purchase" and visit the original PDF download link to get the latest version of the book.

Michael Hartl

I’m Michael Hartl—author, educator, and entrepreneur. I’m probably best known as the creator of the Ruby on Rails Tutorial, a book and screencast series that together constitute one of the leading introductions to web development. Once called his “favorite book” by Wikipedia founder Jimmy Wales, the Ruby on Rails Tutorial currently has over 150 5-star reviews at Amazon. I’m also (in)famous for creating Tau Day and The Tau Manifesto, which have inspired an international movement dedicated to the proposition that “pi is wrong.” (For example, as a result of The Tau Manifesto, MIT releases their admissions decisions each year at “Tau Time” (6:28 p.m.), and typing tau/2 at Google yields 3.14159…) Finally, I’m a founder of Softcover, a publishing system and sales platform for technical authors, which among other things powers both The Tau Manifesto and the Ruby on Rails Tutorial.

I’m a graduate of Harvard College and have a Ph.D. in Physics from Caltech, where I studied black hole dynamics and was an award-winning instructor in theoretical and computational physics. I’m also an alumnus of Y Combinator, the entrepreneur program that has produced companies such as Dropbox and Airbnb. (Alas, my own Y Combinator startup was neither Dropbox nor Airbnb.)