Governments / Central banks – A country’s central bank can play an important role in the foreign exchange markets. They can cause an increase or decrease in the value of their nation’s currency by trying to control money supply, inflation, and (or) interest rates. They can use their substantial foreign exchange reserves to try and stabilize the market.
Most retail investors should spend time investigating a forex dealer to find out whether it is regulated in the U.S. or the U.K. (dealers in the U.S. and U.K. have more oversight) or in a country with lax rules and oversight. It is also a good idea to find out what kind of account protections are available in case of a market crisis, or if a dealer becomes insolvent.
A forward trade is any trade that settles further in the future than spot. The forward price is a combination of the spot rate plus or minus forward points that represent the interest rate differential between the two currencies. Most have a maturity less than a year in the future but longer is possible. Like with a spot, the price is set on the transaction date, but money is exchanged on the maturity date.
Forex trading as it relates to retail traders (like you and I) is the speculation on the price of one currency against another. For example, if you think the euro is going to rise against the U.S. dollar, you can buy the EURUSD currency pair low and then (hopefully) sell it at a higher price to make a profit. Of course, if you buy the euro against the dollar (EURUSD), and the U.S. dollar strengthens, you will then be in a losing position. So, it’s important to be aware of the risk involved in trading Forex, and not only the reward.
It's important to consider whether a Forex broker and their trading platform will suit your trading style. For example, you might be interested in following a Forex scalping strategy, which involves making a high volume of small profits on small currency movements. In this case, you would need to ensure that any potential broker has minimum distance between the market price and your stop-loss and take-profit.
Diversify your portfolio: We all know the saying, 'don't put all your eggs in one basket', yet many new FX traders do this when it comes to their trading. Just as it isn't wise to put all of your funds into a single trade, relying on a single currency pair increases your level of risk, because if the pair moves in a different direction to what you expect, you could lose everything. Instead, consider opening a number of small trades across different Forex pairs.
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.
A trader thinks that the European Central Bank (ECB) will be easing its monetary policy in the coming months as the Eurozone’s economy slows. As a result, the trader bets that the euro will fall against the U.S. dollar and sells short €100,000 at an exchange rate of 1.15. Over the next several weeks the ECB signals that it may indeed ease its monetary policy. That causes the exchange rate for the euro to fall to 1.10 versus the dollar. It creates a profit for the trader of $5,000.
However, since the Forex market is a global market, it means there is always a part of the world that is awake and conducting business, and during these hours their currencies tend to experience the most movement. For example, currency pairs involving the US dollar experience the most movement during US business hours (16:00 to 24:00 GMT), while the Euro, Pound, Swiss Franc and other European currencies experience the most movement during European business hours, (8:00 and 16:00 GMT).

One unique aspect of this international market is that there is no central marketplace for foreign exchange. Rather, currency trading is conducted electronically over-the-counter (OTC), which means that all transactions occur via computer networks between traders around the world, rather than on one centralized exchange. The market is open 24 hours a day, five and a half days a week, and currencies are traded worldwide in the major financial centers of London, New York, Tokyo, Zurich, Frankfurt, Hong Kong, Singapore, Paris and Sydney—across almost every time zone. This means that when the trading day in the U.S. ends, the forex market begins anew in Tokyo and Hong Kong. As such, the forex market can be extremely active any time of the day, with price quotes changing constantly.