Hi,
A lot of people are using MetaTrader 4 software (MT4) and it is free from lots of brokers. I downloaded my copy from Alpari.co.uk and have a demo account with them.
Here is a list of some of the brokers that offer MT4:
Forex Factory - View Single Post - MT4 Indicators Usage Tutorial/MQL4 Reference Documents
In MT4 you can also develop your own indicators, alerts, automated trading systems etc. There are heaps of free indicators available on the internet that other people have already created. For example, if you want to trade the Cowabunga system then there is already a Cowabunga indicator (which I partly developed) - see the Cowabunga forums to download it and use it for free.
Good luck.
Regards,
Pipalot
