“This page features a growing list of Free Philosophy eBooks, presenting essential works by Aristotle, Hegel, Kant, Nietzsche, Wittgenstein and many other philosophers. You can generally read these texts on your Kindle, iPad & iPhone, or web browser. For those interested in philosophy, you won’t want to miss our collection of Free Online Philosophy Courses.“
Free, open-source, high-quality textbooks for your college course.
Source: OpenStax College
Resources to Understanding evolution
Mechanisms of evolution and change
Misconceptions about evolution
Darwin Manuscripts project
Genetic Variation in Populations
Timeline of evolutionary history of life
Timeline of human evolution
The Top Ten Daily Consequences of Having Evolved at The Smithsonian
Read The Origin of Species online
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A comprehensive alphabetical listing of free books for reading or listening can be found on these pages:
Best Free eBooks Online – all ebook sites (913)
Free eBooks and Audio Books To Read Online Or Download– links to all pages of ebooks and audiobooks”
“600 free eBooks to your Kindle, iPad/iPhone, computer, smart phone or ereader. Collection includes great works of fiction, non-fiction and poetry, including works by Asimov, Jane Austen, Philip K. Dick, F. Scott Fitzgerald, Neil Gaiman, Tolstoy, Dostoevsky, Shakespeare, Ernest Hemingway, Virginia Woolf & James Joyce.”
And on this link, you can find tons of Free Audio Books.