If you want to trade forex with minimum account and cost, don't look further: Oanda is the most professional platform you will ever encounter. They have the tightest spread (1.2 on EUR/USD), instant execution, minimum trade size of 1$ and huge volume because it's also used by institutional firms.

Many forex brokers do trade against their own clients so that there are conflicts of interest. With Oanda tight spread and instant execution, this doesn't occur.

Oanda offers a free unlimited Practice Account FxGame.

They can accept deposit by Paypal - includig for International Accounts in $ but no more than 100$ for non-verified Paypal Account.