Pdfs/epubs of most of these books can be found on b-ok.
For recommendations on feminism, including Marxist Feminism, see my feminism reading list.
Primary Sources
Part 1
- Marx and Engels, The Communist Manifesto
- Marx, Preface to a Contribution to the Critique of Political Economy (very short)
- Marx, Wage Labour and Capital (short)
- Marx, Thesis on Feuerbach (very short)
Part 2
- Marx, Critique of the Gotha Programme
- Marx, The Civil War in France
- Marx, Letters to Zasulich (clarifies important points about Marx’s theory of history and views on Russia)
- Marx, Conspectus of Bakunin’s Statism and Anarchy (very short)
Part 3
- Marx, Economic and Philosophic Manuscripts of 1844
- Marx, Grundrisse
- Marx, Capital Volume 1
Secondary Sources
- Anderson, Kevin – Marx at the Margins: On Nationalism, Ethnicity and Non-Western Societies
- Fromm, Erich – Marx’s Concept of Man (short)
- Hunt, Richard – The Political Ideas of Marx and Engels Volumes 1 and 2.
- Heinrich, Michael – “Je ne suis pas marxiste” (very short)
- Heinrich, Michael – An Introduction to the Three Volumes of Karl Marx’s Capital
- Lebowitz, Michael – Beyond Capital: Marx’s Political Economy of the Working Class
- Meszaros, Istvan – Social Structure and Forms of Consciousness, Volume II: The Dialectic of Structure and History (very hard but worth it)
- Ollman, Bertell – Alienation: Marx’s Conception of Man in Capitalist Society
- Raekstad, Paul – The Democratic Theory of the Early Marx
- Raekstad, Paul – Human Development and Alienation in the Thought of Karl Marx
- Tabak, Mehmet – Dialectics of Human Nature in Marx’s Philosophy
Marxist Theory
- Ollman, Bertell – Dance of the Dialectic: Steps in Marx’s Method
- Lebowitz, Michael – The Socialist Alternative: Real Human Development
- Lebowitz, Michael – The Contradictions of “Real Socialism”: The Conductor and the Conducted
- Wood, Ellen Meiksins – Democracy Against Capitalism: Renewing Historical Materialism
Videos
- Raymond Geuss’ lectures on Marxism
- Red Plateaus’ video series Marx on human development, freedom, alienation and socialism
Zoe Baker 
Hi, good list so far, I would definitely add some of the following:
* Harry Cleaver “Reading Capital Politically” and his new book “Rupturing the Dialectic: The Struggle against Work, Money, and Financialization”.
* Massimo De Angelis’ beautiful book “The Beginning of History: Value Struggles and Global Capital” (looking forward to his upcoming book “Omnia Sunt Communia: The Strategy for Postcapitalism”).
* John Holloway’s ‘Change the world without taking power’ and (the much better book) ‘Crack capitalism’.
Which you can find here
https://libcom.org/library/crack-capitalism-john-holloway
https://libcom.org/library/change-world-without-taking-power-john-holloway
* Werner Bonefeld’s “Critical Theory and the Critique of Political Economy: On Subversion and Negative Reason”.
* Moishe Postone’s “Time, Labor and Social Domination: A Reinterpretation of Marx’s Critical Theory”.
* Anything by the Midnight Notes Collective.
Have you read “Marx’s Inferno: The Political Theory of Capital” by William Clare Roberts? It’s been recommend by every Marxist I know.
Peter Hudis’ “Marx’s Concept of the Alternative to Capitalism” is also good:
https://libcom.org/library/marxs-concept-alternative-capitalism-peter-hudis
Jan Wacław Machajski is also an interesting character:
https://en.wikipedia.org/wiki/Jan_Wacław_Machajski
I haven’t read these books but do want to.
You should do a video on Leninism.
The book “Bloodstained: One Hundred Years of Leninist Counterrevolution” collects all the best critiques:
https://archive.org/details/BloodstainedOneHundredYearsOfLeninistCounterrevolution
Ron Tabor (who is now an anarchist) has written some very good stuff about this, like:
– A look at Leninism – Ron Taber:
https://libcom.org/library/look-leninism-ron-taber
– The Tyranny of Theory: A Contribution to the Anarchist Critique of Marxism – Ronald D. Tabor:
https://www.akpress.org/thetyrannyoftheory.html
There (analytical philosopher and anarchist) Alan Carter’s critique:
– Marx: a radical critique – Alan Carter:
https://libcom.org/library/marx-radical-critique-alan-carter
From the Marxist perspective there are these critiques of the USSR:
– The Marxian Concept of Capital and the Soviet Experience – Paresh Chattopadhyay:
https://libcom.org/library/paresh-chattopadhyay-marxian-concept-capital-soviet-experience
– Capitalism and class struggle in the USSR – Neil C. Fernandez:
https://libcom.org/library/capitalism-class-struggle-ussr-neil-c-fernandez