Starting out trading forex is a very simple proposition: sign up with an online broker, download any software, deposit some money and you are ready to trade. Most of the reputable brokerage firms have a practice account facility where they will open an account, deposit fake money into the account and allow you to start trading in real time.
Some of these same brokers are also offering to open an account and start you trading for real using a very small deposit, say $100. Even with a 200:1 leverage applied, this amounts to only $20,000 - nowhere near enough to make a forex trade. My own feeling is that these "mini accounts," are a complete waste of time and money (see leverage) and possibly just plain dangerous. In the unlikely event that you do make money with a $100 deposit and are then tempted to place a larger one, anything you learned trading at this level will not apply to a substantially larger trade. Try a practice account with one of the larger banks instead. N.B Trading on a practice account, regardless of how realistic it is, is not the same as trading for real. If it doesn't matter whether you win or lose, you will behave differently to the way you will act when money is at stake

These are difference between forex and stock.
a) Forex traders could obtain a much larger transaction compared to the stock market, through the Forex trading, Forex traders could obtain 100 times larger transaction compared to the stock market. According to the present US situation, if a Forex trader invests $1,000 in the stock market, the trader may obtain $2,000 of stock domination property with a proportion of 2:1, but through Forex trading, a Forex trader can do transaction with a proportion up to 100:1.
Forex trader may make profit from the ordinary news, like the interest rate change, Forex market is closely related to various countries' politic, economy and culture, Forex traders could also obtain profit from other kinds of news, for example interest rate level change, will influence the interest of the Forex deposit.

b) Forex market has a lot of advantages compare to stock market:
A Forex trader could make profit through the market no matter if it is bearish and bullish which is different from the capital market, Forex has no strict regulation in speculation, no matter whether it is a long-term or a short-term transaction there is still a hidden profit, moreover, Forex market is a double-transaction market which means Forex traders could make profit through both upward and downward trend.

c) In the stock market there are hundred and thousand kinds of stocks, then choosing stock will be a very difficult matter. But in the Forex market, the currency combination is extremely limited, this may enable Forex traders to concentrate on these currencies combination, and could follow the trend quickly.

d) If a trader analyze based on technical analysis, Forex trading would be much more suitable for such traders because the Forex market has a very large trading volume. Currently the Forex market has daily trading volume of 190 billion Dollar, such giant market will completely digest a fore trader's transaction cash, under such situation the accuracy of the technical analysis would be much higher then any financial market, the chances of using technical analysis to make profit would be much more higher.
e) Forex traders could do 24 hours trading. The stock market can only be traded during daytime at a specific time, generally from 9:30a.m. to 4:00p.m.. If you too have your own full time job, then you will face the dilemma - either to give up your full time job or forgo the trading opportunity. But Forex market can be traded 5 days a week and 24 hours a day, Forex traders can trade during their free time which is normally at night after working hour.