Group 1 - Funds are suitable investment products for ordinary people, and there is a free course available to help beginners understand fund investment from scratch [2] - The course includes notes and mind maps to facilitate efficient learning [2] Group 2 - The relationship between stock prices and company earnings can be complex, with some companies showing good earnings but stagnant stock prices, while others with losses may see stock price increases [6][8] - Companies can be categorized based on their Return on Equity (ROE): loss stocks (negative ROE), marginal profit stocks (positive ROE but below market average), and quality stocks (positive ROE above market average) [6][7] - In periods of ample liquidity, stocks with poor earnings may rise more than those with good earnings, indicating a speculative market environment [9][11] - Long-term investment should focus on companies with relatively good earnings to ensure sustainable returns, rather than engaging in short-term speculation or investing in loss-making companies [11]