If you only want one book, that book is Capital I. I suggest David Harvey's lectures along with it, they'll help out quite a bit. If you have read Smith and Ricardo, that'll make it much easier, too. For bonus points, read the short "Wages, price, and profit" by Marx, it's a bit easier of an intro than the book's.
If you can fit in a second, I'd suggest "the State and Revolution" by Lenin.
Marx identifies a problem and a crude solution, and Lenin provides a good solution. Those two will give you the most of it. Wikipedia, especially on the historical/dialectical materialism stuff, is helpful.
If you only want one book, that book is Capital I. I suggest David Harvey's lectures along with it, they'll help out quite a bit. If you have read Smith and Ricardo, that'll make it much easier, too. For bonus points, read the short "Wages, price, and profit" by Marx, it's a bit easier of an intro than the book's.
If you can fit in a second, I'd suggest "the State and Revolution" by Lenin.
Marx identifies a problem and a crude solution, and Lenin provides a good solution. Those two will give you the most of it. Wikipedia, especially on the historical/dialectical materialism stuff, is helpful.
A more full list is here: http://www.reddit.com/r/communism/comments/wisiw/basic_marxi...
Also, /r/communism101 is very good and there to answer questions, if you Reddit.