What Is Forex Trading? A Plain-English Guide

Forex — foreign exchange — is trading one currency against another. You don't buy a single thing; you buy a pair, like EUR/USD, betting that one currency strengthens against the other. If the rate moves your way, you profit; if not, you lose. It's the largest, most liquid market in the world, and it runs over-the-counter through brokers, 24 hours a day on weekdays.

How a forex trade works

Every quote is a currency pair with a base and a quote currency. In EUR/USD, the euro is the base and the dollar the quote; the price (say 1.0850) is how many dollars one euro costs.

• Go long if you think the base will strengthen (buy the pair).
• Go short if you think it'll weaken (sell the pair).

Your profit or loss is the rate change, scaled by your trade size.

The five things that actually matter

• Currency pairs — majors (EUR/USD, GBP/USD…) are the most traded and liquid; minors and exotics are wider and riskier.
• Pips — the standard unit of price movement, how you measure a gain, loss or cost: What is a pip?
• The spread — the gap between buy and sell price, and your main trading cost: What is the spread?
• Lot size — how big your position is (a standard lot is 100,000 units of the base currency; mini and micro lots are smaller), which sets how much each pip is worth.
• Leverage — forex brokers often offer very high leverage (commonly 1:30 in tightly-regulated regions, far higher elsewhere). It magnifies both sides — the same reason risk management is non-negotiable.

The broker's role

Retail forex runs through a broker that quotes prices, executes your trades, and provides the leverage. Brokers differ in spreads, regulation, and execution model — which is exactly what a platform comparison should pin down (the broker guides will cover specific platforms).

A realistic word on risk

Forex's high leverage cuts both ways, and most retail traders lose — regulated brokers are required to say so. Start on a demo account, learn the mechanics on the linked guides, and size positions by risk, not by the leverage the broker will let you use.