Placing a trade in the foreign exchange market is simple. The mechanics of a trade are very similar to those found in other financial markets (like the stock market), so if you have any experience in trading, you should be able to pick it up pretty quickly.
The objective of forex trading is to exchange one currency for another in the expectation that the price will change.
More specifically, that the currency you bought will increase in value compared to the one you sold.
An exchange rate is simply the ratio of one currency valued against another currency.
For example, the USD/CHF exchange rate indicates how many U.S. dollars can purchase one Swiss franc, or how many Swiss francs you need to buy one U.S. dollar.