Rich Barton, co-founder of Expedia, the Zillow Group of sites and Glassdoor, turns to the classic tale “The Wizard of Oz” for a lesson on team basics. The traits that the scarecrow, cowardly lion and the tin man sought are the exact ones to look for among members of any team you join. Intelligence, a sensible amount of courage, and genuine care for people are essential for a team, Barton says.