Group 1 - The article emphasizes that fund investment is a suitable method for lazy investors and discusses how to effectively implement fund investment strategies [2][3] - It introduces a free course that helps investors understand how to prepare for fund investment and create a solid investment plan [2][3] - The article outlines four types of index funds: broad-based, strategy, industry, and thematic indices, providing guidance on how to select the appropriate type for different investment levels [4][5][6] Group 2 - For novice investors, it is recommended to start with broad-based indices, which include stocks from various industries and have lower volatility risk [5] - Once investors gain some experience, they can explore strategy indices that cater to specific investment needs, such as dividend or value strategies [6] - Industry and thematic indices carry higher volatility and investment difficulty, but can offer significant returns during market upswings; it is advised to limit exposure to any single industry or theme to 15%-20% for better risk management [7]