Xelam has given a good answer. You can always go online and check out forex articles. The risk is making wrong entry and exit points resulting in loss. As such, if you start forex like a lot of new comers to forex, without managing your risk, you can get burnt. I believe managing the risk is most important. Don’t take risks that you can’t afford to take. However, nowadays for new comers there are many new software systems that make it easy for those with no experience to trade and manage their trading.
Do you mean broker when you say investing company? So far, I’ve only used Easy Forex.