Nightly PDFs: http://nightly.learnyou.org/lysa


Learn You!

To be perfectly honest, I got this domain because I couldn't find lysa .anything, and learnyou.org was pretty memorable. But, it occured to me that it would be nice if there were a project to create easy-to-read, fun, free, and open-source learning materials.

With that in mind, this is a project to create easy-to-read, fun, free, and open-source learning materials.

To be perfectly clear, this project is not affiliated with Learn You a Haskell or Learn You Some Erlang.1

At the moment, there's one guy, me, Peter Harpending. I only have the one project: Learn You Some Algebras for Glorious Good!, a math textbook. I have other projects, just none other that are relevant here.

If you have an idea/criticism/audible rant, feel free to share it with me. Here's my contact information:

I'd be very open to people adding more projects under the LearnYou umbrella. I'm willing to give you a lot of autonomy.

It doesn't have to be books. Interactive things, videos, etc, would all be fine, as long as they are reasonably approachable, and open-source..

What do "free" and "open-source" mean?

It has nothing to do with the fact that you don't have to pay for my book. Although, that is a bonus.

It means that my book satisfies the respecitive definitions of

  1. free cultural works, and
  2. open works.

The "tl;dr" of it is: you can share, modify, and improve my book. The book is licensed under the Creative Commons ShareAlike license.

This setup is beneficial to everyone

Wait, so you're giving your books away, and that benefits you somehow?

Yep. Basically, if someone sees a way to improve the book, they are welcome to. In most cases, that person will actually send me back their changes. Thus the quality of the book improves, with minimal effort on my part. This happens more than you would think.


  1. I did ask the Learn You a Haskell! author's permission to name my project as such, and he granted me permission.


Creative Commons License

learnyou.org is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.