Stock Trading Size

I have about $ 10,000 to invest, should I trade stocks, start, or should I try to Futures Trading?
In negotiating futures contract will trade I think I can sweet corn because it has a small contract size (1,000 bushels * $ 5 = $ 5,000), but is not very liquid. What other liquid contracts I can operate with a contract size from $ 5,000 to $ 10,000? In populations where the broker is not recommending u, eTrade or optionxpress? Will I be allowed to trade in the margin in the long and short are you? Also, if you can u get ur information? eSignal package seems to have NMS of $ 295, but do not know if it is compatiable MetaStock?
Avenir is a very fast way to lose all 10k. I know from experience. If you open an account at Interactive Brokers, you can trade stocks, futures and stocks, and even foreigners Forex too. But personally, I do not recommend you try it. Margin requirements for substances premiums. You are mistaken about what it takes to trade commodity futures. You must establish that the initial margin contract. For corn futures, for example – a hot commodity now – you only need $ 1350 margin. Soybeans require about $ 3,000 more. You're absolutely right when it comes to the future of the wells oil. The margin requirement is much higher. Approximately $ 7100. Forex margins are about 2% Here is a link where you can learn all this and Interactive Brokers. http://individuals.interactivebrokers.com/en/trading/marginRequirements/margin.php?ib_entity=llc I have to say that I have a stock of Interactive Brokers.
Calculating Your Position Sizing