An FX trade is made up of the concurrent buying and selling of currency. This means that a trader will buy the currency of a foreign country while at the same time selling the currency of another, not necessarily that of his own country. Such a trade is referred to as a cross and is represented by the initials of the different countries and currencies. For example, the symbol GBPUSD stands for the cross of the Great Britain Pound to the United States Dollar. The most common crosses involve the Japanese Yen, the United States dollar and the Great Britain pound. Many of the most important FX trading are called spot deals as they are completed ‘on the spot.’ Normally these deals take two banking days to complete. FX trading isn’t as involved as many other investments such as the stock market and can be done quickly and efficiently.

I would say, Trading System is the key factor to win forex. you can learn more at forex*factory.com or baby*pips.com

You have read A LOT of books and spoken to a lot of traders (not just forex, options, futures, cfds etc) and all the successful ones say the same things.

Hottest Auto Forex Trading System Blog
http://www.spicyforex.com