Marxist Theory
Economic & Philosophic Manuscripts of 1844 By Karl Marx
Published posthumously, from unfinished notebooks, this book offers
useful insights into the ideas of Karl Marx and the genesis of Marxism.
Base and Superstructure By Chris Harman
Harman's essay is a very useful outline of a non-deterministic Marxism
that retains its explanatory power through structural (class) analysis
and the central place of the class struggle in history.