Group 1 - The article emphasizes the importance of understanding basic information, including historical performance and comparative analysis of investment options based on size, liquidity, and fees [4] - It highlights the need to assess industry background, focusing on short-term policy impacts and long-term industry lifecycle and prospects [4] - The article discusses the significance of understanding index composition, particularly the top ten holdings and their weights, to analyze trends and indicators [4] Group 2 - It outlines different investment strategies, including long-term holding of potential assets to maximize returns and avoid missing out on upward trends [5] - The article presents a dollar-cost averaging approach, which involves regular investments regardless of market conditions to reduce costs [5] - It also describes a trading strategy that focuses on buying low and selling high within a range, allowing for profit from price differences while managing risks [5]