I am going to make some suggestions to a company that might possibly sponsor development of free electronic text books for schools (suitable for running on an OLPC machine).
I would appreciate any suggestions for things I should include. I will make my suggestions as a blog post summarising all input I receive and send the URL to the company in question.
There are several people who have published GPL-licenced documents on paper via O’Reilly publishers. Consultation with editors at http://www.oreillynet.com/ may be useful.
Basic scientific theory, logic, and critical thinking. Those form the foundation of everything else. Studying those amounts to “learning how to learn”.