So I am new to QuantConnect, and new to creating algorithms in general. I have been trying to develop a strategy that buys a stock from S&P 500 and sells it after a certain amount of time (say 15 minutes). How do I do this? I have been going through the bootcamp but it doesn't seem to be helping much. I'm not trying to create a stopMarketOrder, rather I want to sell the stock I bought after said period of time. This strategy is just to get my bearing on the programming language.