Please help with an example so I can have a better understanding of what I need to do for future reference.

Choose a company that publicly traded (stock)

What is the stock symbol?

Pull daily stock closing prices for the last 6 months. (change time period and frequency)

Download the data in excel.

Create a chart (scatterplot) looking at the data

Determine the how much you could have made if you purchased 1,000 shares of stock at the lowest price then sold those shares at the highest price in that time period.