Reid Hoffman enjoys helping people do good things. He started the social network LinkedIn precisely to help people, specifically people in a professional context, form, improve, and make use of their relationships. In fact, the tagline of the company is "Relationships matter." All of Hoffman''s actions and decisions are guided by three principles: making the greatest impact for good, valuing relationships, and working toward massive scale. This captivating biography of the man and the company he cofounded provides readers with a look into entrepreneurship, goal setting, Internet start-ups'' business operations, and how to build on successes to help the common good. The informational text, which includes fact sheets on the life of Hoffman and LinkedIn''s accomplishments, takes inspiration from some science, technology, engineering, and mathematics (STEM) concepts to encourage students to become technologically literate so that they can participate fully in these emerging fields. A timeline provides readers with a concise overview of notable events.