Group 1 - The article emphasizes that many investors start their investment journey with index funds and highlights the importance of understanding investment techniques to achieve good returns [2] - A free course is offered to teach investment strategies for index funds, including course notes and mind maps for efficient learning [2] Group 2 - During stock market downturns, investors can reduce volatility risk by choosing index funds, as they typically exhibit lower volatility compared to individual stocks [7] - Buying undervalued assets can also minimize downside volatility risk, with examples illustrating the limited downside potential when the market is at a 5.9 rating compared to a 1 rating [9] - For those seeking lower volatility, value-style investments are recommended, as they generally have less fluctuation than the market, while growth-style investments tend to be more volatile [10] - If value and dividend stocks still present significant volatility risk, managing stock asset allocation is advised [10]