The spread, in Forex, is the difference between the bid and ask price of a currency pair. For example, if the Bid price of the EUR/USD is 1.16668, and the sell price is 1.16669, the spread will be 0.0001, or 1 pip. In any Forex trade, the value of a currency pair will need to cross the spread before it becomes profitable. To continue with the previous example, if a trader entered a long EUR/USD trade at 1.16668, the trade wouldn't become profitable until the value of the pair was higher than 1.16669.

Set realistic trading goals: It's important to be realistic with your trading expectations, as this will help you assess the best times to open and close trades. Many new Forex traders have very high expectations about their potential profits, and this causes them to trade very aggressively, with large sums of money and fast decisions. Again, start small to test your knowledge and skills, and as you start to reliably achieve the results you want, you can set bigger goals.

Leverage: Leverage is capital provided by a Forex broker to bolster their client's trading volume. For example, if you use a 1:10 rate of leverage and have $1,000 in your trading account, you can trade $10,000 worth of a currency pair. If the trade is successful, leverage will maximise your profits by a factor of 10. However, please note that leverage also multiplies your losses to the same degree, so it should be used with caution. If your account balance falls below $0, you may trigger a broker's negative balance protection settings (if trading with an ESMA regulated broker), which will result in the trade being closed. Fortunately, this means that your balance cannot move below $0, so you will not be in debt to the broker.

The foreign exchange market works through financial institutions and operates on several levels. Behind the scenes, banks turn to a smaller number of financial firms known as "dealers", who are involved in large quantities of foreign exchange trading. Most foreign exchange dealers are banks, so this behind-the-scenes market is sometimes called the "interbank market" (although a few insurance companies and other kinds of financial firms are involved). Trades between foreign exchange dealers can be very large, involving hundreds of millions of dollars. Because of the sovereignty issue when involving two currencies, Forex has little (if any) supervisory entity regulating its actions.
Swing trading: Swing trading is a medium-term trading approach that focuses on larger price movements than scalping or intraday trading. This means that traders can set up a trade and check in on it within a few hours, or a few days, rather than having to constantly sit in front of their trading platform, making it a good option for people trading alongside a day job.

Just like stocks, you can trade currency based on what you think its value is (or where it's headed). But the big difference with forex is that you can trade up or down just as easily. If you think a currency will increase in value, you can buy it. If you think it will decrease, you can sell it. With a market this large, finding a buyer when you're selling and a seller when you're buying is much easier than in in other markets. Maybe you hear on the news that China is devaluing its currency to draw more foreign business into its country. If you think that trend will continue, you could make a forex trade by selling the Chinese currency against another currency, say, the US dollar. The more the Chinese currency devalues against the US dollar, the higher your profits. If the Chinese currency increases in value while you have your sell position open, then your losses increase and you want to get out of the trade.
A swap trade involves both. Dealers buy a currency at today's price on the spot market and sell the same amount in the forward market. This way, they have just limited their risk in the future. No matter how much the currency falls, they will not lose more than the forward price. Meanwhile, they can invest the currency they bought on the spot market.
Forex is a portmanteau of foreign currency and exchange. Foreign exchange is the process of changing one currency into another currency for a variety of reasons, usually for commerce, trading, or tourism. According to a recent triennial report from the Bank for International Settlements (a global bank for national central banks), the average was more than $5.1 trillion in daily forex trading volume.