1. Professional knowledge writing: Volunteers need to have certain professional knowledge in order to better carry out volunteer service. The training content can include the basic knowledge of voluntary service, the characteristics of the clients, service skills and so on.

2. Teamwork: Volunteer service requires teamwork, and only unity and cooperation can better accomplish the task. Training content can include how to cooperate with team members, how to communicate effectively, how to coordinate conflicts and so on.

3. Social responsibility: Voluntary service is a kind of social responsibility. As a volunteer, you need to take this responsibility. The training content can include the significance and value of voluntary service, and how to better fulfill social responsibilities and make more contributions to society.