What is Libre University?
Libre University was created to allow the students of different universities and schools to collaborate in learning. Each bit that a student or teacher writes adds up to everyone using it.
What's the difference with Khan Academy?
Khan focuses on video while we love text. In this way you can just print it, get it to go in your favourite ebook and on a weak 3g connection.
How can I collaborate?
If you can program please go to github where you can help most to develop the first beta. Or go to the Spanish version and collaborate writing the first steps.