How does day trading work? I mean the price fluctuates every second. So for one second if you want to buy it at one price and then during the time you go and buy it it goes up does it sell at the price you want to or the new price? Also can you buy when the market is closed? Also is there a sight that shows you the basics of trading stocks?
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well you can use a thing called "limit buys", which automatically buys or sells what ever quantity of stock you want at a certain price. Day trading really means that you close all your positions every day, but it is now a generalization for short term (often a week or so). You can use sites like E*Trade, etc. but unless you have a significant amount of capital it isnt a good idea because commission is usually around $10, so if you cant make more than that, you lose. It is very dangerous, and you need to know what your doing. Im a value guy, I stay away from day trading. Try http://www.investopedia.com, its a great source for beginners.