Complex sentence: The book chronicles Miret's career as the vocalist of Agnostic Front as well as his upbringing; the autobiography focuses on Miret's trials and tribulations growing up in 1980s New York City.
Split into simpler sentences: The book chronicles Miret's life surrounding his career as the vocalist of Agnostic Front and the events in his upbringing. The biography focuses on Miret's trials and tribulations growing up in 1980's New York City.