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Free to Learn Guide by Hal Plotkin
Textbooks make up a large part of the overall cost of a college education.
We maintain the chapters for all Global Text Project books in open document format with extensive use of style sheets so that we can quickly convert them into different media or formats.
The writing of textbooks and making them freely available on the web is an idea whose time has arrived.
I don't know dutch, but maybe someone out there who knows some will do something. Open Source isn't something that other people do, we all can contribute if we find something we can help with! by Feb 2
About Open Books O'Reilly has published a number of Open Books--books with various forms of "open" copyright--over the years.
Open-Source Textbooks Instead I am concentrating recommendations and examples within the undergraduate mathematics curriculum, so please visit the Open Math Curriculum page. If you are linking to this site, please use that page for a broad list, or link to linear.pugetsound.edu specifically for the Linear Algebra text.