Group 1 - Investing in the stock market is a viable method for building long-term wealth, but selecting the right stocks can be challenging due to the vast number available [1] - For new investors, it is advisable to focus on companies with solid business models, steady growth, strong competitive advantages, and robust balance sheets [2] - Companies that meet these criteria are more resilient across various economic conditions and can serve as a strong foundation for a diversified investment portfolio [3] Group 2 - Berkshire Hathaway is highlighted as a cash-rich company with consistent revenue streams, benefiting from its diverse operations in insurance, utilities, manufacturing, transportation, and retail [5][6] - The company has a significant cash reserve of $381 billion, which can be utilized during market downturns, ensuring its continued success even after the departure of CEO Warren Buffett [7] - Visa operates a high-margin business model within a global payments network, generating revenue from transaction fees while avoiding credit risk, thus maintaining steady revenue across economic cycles [8][9]