Capital: Volume 1 by Karl Marx
Capital: Volume 2 by Karl Marx
Capital: Volume 3 by Karl Marx

Abridged versions of these books:

What's Wrong With Globalization by Joseph Stiglitz

The Price of Inequality by Joseph Stiglitz

The Euro and its Threat to the Future of Europe by Joseph Stiglitz

The Great Divide by Joseph Stiglitz

What Every Person Should Know About War

Death of the Liberal Class by Chris Hedges

Requiem for the American Dream by Noam Chomsky

Cypherpunks: Freedom and the Future of the Internet by Julian Assange

Wages of Rebellion: The Moral Imperative of Revolt by Chris Hedges

Manufacturing Consent by Noam Chomsky

The Intellectual Life of the British Working Classes by Jonathan Rose

The World As It Is by Chris Hedges

The God Delusion by Richard Dawkins

The Engineering of Consent by Edward Bernays

Propaganda: The Formation of Men's Attitudes by Jacques Ellul

Propaganda: How to Recognize It

Media Control: The Spectacular Achievements of Propaganda

How to Detect Media Bias and Propaganda

Nietzsche's Aphorisms - Beyond Good and Evil

Dark Ages America by Morris Berman

Chavs: The Demonization of the Working Class by Owen Jones

The Road to Wigan Pier by George Orwell

My Life by Leon Trotsky

A Rebel's Guide to Marxism by Marxism 101

Capitalism Must Die by Stephanie McMillan

The ABCs of Socialism by Jacobin

Socialist Feminism by Chicago Women's Liberation Union

A Specter is Haunting America: Bernie Sanders and Socialism in 2016 by Jenny Keyt

Millennials and Socialism by Tom Switzer and Charles Jacobs

Democracy in the Workplace by Richard Wolff

A People's History of the United States by Howard Zinn

Feminism and Socialism by Mandy Leveratt