The foreign exchange market, or Forex (FX), is where currencies are traded. It’s a global, decentralized marketplace, meaning it has no central physical location. Instead of a single exchange like the New York Stock Exchange, trading happens electronically over-the-counter (OTC) through a network of banks, corporations, and individual traders.

It’s the largest financial market in the world by a long shot. Every day, trillions of dollars change hands as people and institutions buy one currency while selling another. This constant exchange is what keeps international trade and investment flowing smoothly.

The main players include large commercial banks (the interbank market), multinational corporations, central banks managing their country's reserves, and retail traders like you.

In forex, you never just buy a currency; you always trade one currency for another. This is why they are quoted in pairs, like EUR/USD or USD/JPY.

The first currency in a pair is the base currency, and the second is the quote currency. The price of a pair shows how much of the quote currency you need to buy one unit of the base currency.

While there are hundreds of possible currency pairs, most trading centers on a few key players known as the major pairs. These all involve the US dollar and are the most liquid, meaning they are traded in the highest volumes.

There are also minor pairs (which don't include the US dollar but involve other major currencies, like EUR/GBP) and exotic pairs (which pair a major currency with one from a smaller or emerging economy, like USD/TRY for the Turkish Lira).

Forex quotes always show two prices: a bid and an ask price.

• Bid: The price at which a broker is willing to buy the base currency from you.
• Ask: The price at which a broker is willing to sell the base currency to you.

The difference between these two prices is called the spread, which is how brokers make money. For example, you might see a quote for EUR/USD as 1.0750 / 1.0752. The bid is 1.0750, and the ask is 1.0752.

Price movements in forex are often measured in pips, which stands for "percentage in point." For most currency pairs, a pip is the fourth decimal place in the quote. If EUR/USD moves from 1.0750 to 1.0751, it has moved one pip.

Currency values are constantly shifting based on a variety of factors. Understanding these drivers is key to understanding the market.

Economic Reports: Data releases like Gross Domestic Product (GDP), inflation rates (Consumer Price Index), and employment numbers have a huge impact. A strong economy typically leads to a stronger currency.

Central Bank Policies: The decisions made by central banks, such as the US Federal Reserve or the European Central Bank, are massive market movers. Interest rate changes are the most important. Higher interest rates tend to attract foreign investment, strengthening the currency.

Geopolitical Events: Political stability (or instability) matters. Elections, trade negotiations, and conflicts can all cause significant volatility in currency markets.

Market Sentiment: Sometimes, the market moves based on expectations or rumors, not just hard data. If traders believe a currency is likely to rise, they will buy it, pushing its value up. This can become a self-fulfilling prophecy.

Now, let's test your knowledge of these foundational concepts.

With these basics in place, you now have the foundational knowledge needed to explore trading strategies.