How I can get monthly pricing for the SP 500 ETF (SPY), Coca-Cola, and Netflix for the past five years. Then, calculate the following using Excel...

How I can  get monthly pricing for the S&P 500 ETF (SPY), Coca-Cola, and Netflix for the past five years. Then, calculate the following using Excel and the provided instructions:

•       Monthly returns for each stock
•        Average monthly return for each stock
•        Annualized returns based on the monthly average return for each stock
•        Standard deviation of monthly returns for each stock
•        Annualized standard deviation based on standard deviation of monthly returns

and Compare the differences in returns and standard deviations in the three sets of data, and discuss their investment implications using a cell within the spreadsheet document.