The first step into the market is opening a brokerage account. Modern investors typically choose between "discount brokers"—user-friendly apps like Robinhood or Fidelity that offer zero-commission trades—and "full-service brokers" that provide personalized financial advice for a fee. Once an account is open and funded via a bank transfer, the investor gains access to the stock exchanges (like the NYSE or Nasdaq) where the actual transactions occur. The Mechanics of Buying

This tells the broker to buy the stock immediately at the current best available price. It guarantees the trade happens fast, but not the exact price.

To buy a stock, an investor must identify the company’s "ticker symbol" (e.g., AAPL for Apple). There are two primary ways to place an order: