download a MetaTrader 4 demo, many fx brokers provide them, Alpari New York/UK
once you've learnt how to operate the software you can demo trade, say 3 months
while monitoring fx forums, trying indicators and trading systems, then open a micro
account - they start at $10 and see how you get on trading real money
futures day trading margin is $500 per contract, minimum $2,000 to open an account
but overnight the per contract margin increases to $3,500 so fx is good for long term
trading since the margin doesn't increase and futures - 6E Euro fx is best for day trading
you WILL get killed trading futures when you don't know wtf you're doing