A biography or a bio is a precise portrayal of a subject's life. A biography includes the details of the subject like education, work, childhood, relationships, and death. It records all the events or happenings of an individual's life. A biography is drafted in the structure of a tale. It follows a certain pattern/rhythm that plays a crucial role in deciding whether the biography is good or not.
Writing a biography is not a piece of cake. It requires thorough research about the person we intend to write on. If the person we want to write about is alive one can schedule an interview with them, and seek their permission to gather their details. If it is someone who was dead, not long ago one can arrange a meeting with their relatives, friends, or grandkids. If the person you want to write about is a historical person, one can use various resources like libraries and also contact those people who might have done research on the subject.