All forex trades involve two currencies because you're betting on the value of a currency against another. Think of EUR/USD, the most-traded currency pair in the world. EUR, the first currency in the pair, is the base, and USD, the second, is the counter. When you see a price quoted on your platform, that price is how much one euro is worth in US dollars. You always see two prices because one is the buy price and one is the sell. The difference between the two is the spread. When you click buy or sell, you are buying or selling the first currency in the pair.
Prepare for the worst: While this might sound pessimistic, in Forex trading it is better to prepare for the worst than expect the best. There have been many times in history when financial markets and individual trading instruments have experienced sudden spikes or drops in value. By considering the worst possible outcome of a trade, you can take measures to protect yourself, should this happen, such as by setting a stop loss in advance.
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The logistics of forex day trading are almost identical to every other market. However, there is one crucial difference worth highlighting. When you’re day trading in forex you’re buying a currency, while selling another at the same time. Hence that is why the currencies are marketed in pairs. So, the exchange rate pricing you see from your forex trading account represents the purchase price between the two currencies.
For example, if you invested 5,000 EUR and lost 1,000 EUR, you will have lost 20% of your balance, leaving you with a final balance of 4,000 EUR. To bring your balance back to 5,000 EUR, you will need to make a profit of 1,000 EUR. However, with a starting balance of 4,000 EUR (after the previous loss), there is now a 25% gain, rather than a 20% one.