Yes, of course, every trader has heard about it, but not everyone is able to correctly understand and use information about orders. Thanks to the article https://www.litefinance.org/blog/for-beginners/orders-market-limit-and-stop-buy-and-sell/ I learned that market orders are used to instantly open a position at the current price. They are also often used in high-frequency trading. Pending orders, such as a Sell limit or Stop limit, are for more experienced traders. Such orders allow you to enter the market at the most convenient prices, with no need to be behind the computer all the time. In general, I advise you to familiarize yourself with the information on this site, because there is a lot of useful information, especially for beginners.