The document provides an overview of Warren Buffett's life and investment philosophy in preparation for a trip to visit Berkshire Hathaway. It summarizes that Buffett started various small businesses as a child, was influenced by Benjamin Graham's teachings at Columbia Business School, started his own investment partnership in 1956 that achieved over 30% annual returns, and eventually took control of Berkshire Hathaway in 1967 which he grew into a massive conglomerate using an approach of investing in understandable, well-managed businesses with favorable long-term prospects bought at attractive prices.