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• As an individual, you cannot trade directly on a stock exchange. For that you will need a "broker" or "brokerage account." A broker is simply a middleman who gives people access to a stock exchange. 
• Every stock has a bid price and an offer (or "ask") price.
• ...

In the equity market, investors bid for stocks by offering a certain price, and sellers ask for a specific price. When these two prices match, a sale occurs. Often, there are many investors bidding on the same stock. When this occurs, the first investor to place the bid is the first to get the st...

Every stock has a bid price and an offer (or "ask") price. “You sell to the bid, and you buy from the ask.”

When you are buying a stock, you can use 2 different kinds of orders:

1. market order: this order tells the broker to get you into the stock...