Gates left Harvard to pursue his passion of programming and founded Microsoft at age 20. By his early 30s, he had become the wealthiest man in the US. In 2006, he stepped down as full-time chairman of Microsoft to dedicate himself to his foundation, which has donated over $28 billion. The document outlines Gates' accomplishments and background, including his family, education, work history at Microsoft, personal life, and philanthropic foundation work.