The document provides tips for becoming a more valuable member of an agile team. It recommends focusing on shared activities rather than signoffs, avoiding covering your own responsibilities, and becoming a "T-shaped" person by gaining expertise in different roles. Specifically, the key points are: 1) Collaborate on all activities like analysis, development, and testing rather than having separate roles and signoffs. 2) Help your colleagues whenever possible to gain new skills and build relationships rather than just completing your own tasks. 3) Develop deep expertise in your own role while also gaining knowledge of other roles to be more flexible and valuable to the team.