>>18111>How much does that cost? Nothing, if you start your account with enough money, some brokers will even pay you to make an account. It's called a brokerage account, two popular ones are TD Ameritrade (what I use and would recommend, comes with free proprietary trading software called ThinkOrSwim that even works on Linux/BSD/Solaris), or Scottrade.
>Where can I trade stocks without being charged every timeWith most brokers, a commission fee is charged usually around $7-$12 every time you buy a stock. If $10 even registers on your radar when buying a stock, don't even bother, unfortunately you need at least a couple thousand to really get started investing/trading stocks. Most stock traders are making or losing hundreds/thousands of dollars a day, and while $10 might be relevant to them in the real world, it's basically irrelevant to them concerning stocks.