Fuck Marx. Das Kapital is garbage. I suggested a book by an anarchist and anthropologist, not a Marxist.

Historically, primitive societies had gift economies, like the arrangements you might find in rural areas today. When my neighbor needs something, I just let him have it, then I know that he will help me when I need something. When I need a tool that my neighbor has, I borrow it from him rather than buy one, and I let him borrow my tools too. This has been called the "communism of everyday life." It's not communal ownership, just the principle "from each according to ability, to each according to need." This gift economy thing was the norm in primitive societies. Barter didn't emerge as a norm until after monetary systems already developed. (This assertion is based on archeological evidence and ancient written records, not mere speculation.)

Monetary systems were created by primitive States. A king would send his soldiers to take over neighboring communities, they'd loot and take all the gold and precious metals. The king would then melt down the metals and mint them into coins, then he'd give the coins to his soldiers. At the same time, the king would impose a tax upon the newly conquered subjects and demand that the tax be paid in the newly minted coins. This, of course, meant that the people had to aquire coins in order to pay taxes, thereby creating a demand for the soldiers' coins. The people would now accept the coins as payment for goods and services. In reality, money and markets are created by governments. The government created the money by spending it into existence when paying the soldiers and it created markets by demanding payment of taxes in government money.

Graeber's book is a good one, but there's tons of other books on the subject.