Group 1 - The core idea emphasizes the importance of foundational knowledge in investing and selecting the right funds, suggesting that solid basic skills are essential for successful investment [2] - It provides a simple method to distinguish between long-term and short-term bond funds, highlighting the significance of fund abbreviations and the prospectus for accurate identification [3] Group 2 - The article encourages readers to engage with a dedicated section on foundational skills, indicating a resource for further learning [7]