This document provides an overview of international monetary systems and foreign exchange. It discusses the need to understand foreign exchange due to global trade involving multiple currencies. It describes hard and soft currencies and the functions of currency. It also outlines different exchange rate systems like the gold standard, Bretton Woods system, and classifications of exchange rate regimes including floating, pegged, and currency board arrangements. It concludes with descriptions of foreign exchange markets, hedging, and the difference between spot and forward markets.