Trading foreign exchange or the FOREX as it is abbreviated to is becoming more and more popular. It is akin to share trading except rather than buying shares and selling them at a profit you trade currencies. This is a good introduction to Forex Trading that explains it better than I can.
The idea with trading currencies is that you trade based on the movement between two currencies such as the Euro (EUR) and the United States Dollar (USD). The value of one currency against another changes constantly and the aim is to make a profit from one currency rising or falling in value against the other.
To be able to start trading you need the services of a Forex broker. A broker will execute your trades on the market much like a share dealer will by and sell shares under your instruction.
Choosing an online Forex broker should be done carefully as each broker has different charges and rules. The best thing to do is take a look at a few different brokers to get an idea of how they work. You can also read reviews by other traders about different brokers and find out their ratings. If you wanted to find out what people thought about Zecco Forex you could read the reviews and opinions of other traders like yourself.