This list was inspired by free-programming-books. A few of us decided to try it for Science books.
It's easy. Please read CONTRIBUTING.
Again, unlike other projects, we prefer multiple small commits rather than one large change in a pull request - it's fine to have one PR, but please make sure your title reflects what you're changing, thanks.
The Free Ebook Foundation was founded as a Non-Profit Corporation in 2015 to be a home for Unglue.it, GITenberg, and to promote the sustainable funding and distribution of free ebooks.