To make good team need do small important rules
No bullying
Do not make one-sided ultimate claims
Do not forget to keep these promises
Do not blame for failure to perform tasks not specified in the employment contract
Do not expose and provoke
Don't beat yourself up
Understand the causes of professional burnout. Proper use of the carrot and stick principle.
These things should be observed not only within the team but also in the environment that can and act negatively on the tasks of the team.
Take a course:
Agile и Scrum в работе над проектами и продуктами (Russian, English subtitles)
Руководство по Скраму (Russain)