Hello there, I'm curious about investing in the S&P 500. I've heard that it's a popular index that tracks the performance of 500 large-cap U.S. companies. But, I'm not sure where to start. Can you tell me where I can buy S&P 500 stock? Are there any specific platforms or brokerages that you recommend? Also, are there any fees or commissions associated with buying S&P 500 shares? I appreciate your help in guiding me through this process.