However, I can tell you some of the themes and ideas that are explored in the book, which can be considered "lessons" for a human reader:
* The importance of standing up for what's right: Paul Fisher faces difficult choices throughout the book, and his journey teaches the reader about the courage it takes to speak out against injustice, even when it's uncomfortable.
* Dealing with family conflicts: The relationships within Paul's family are complex and strained, and the novel explores the challenges of navigating family dynamics and learning to understand and forgive.
* The power of friendship: Paul's relationships with his friends, particularly Erik, are vital to his growth and understanding of himself and the world around him.
* Facing adversity and resilience: The novel tackles themes of bullying, prejudice, and violence, but also shows how characters can find strength and resilience in the face of adversity.
* The need for truth and accountability: The story highlights the consequences of secrets and lies, and the importance of confronting difficult truths to achieve justice and healing.
Ultimately, the lessons learned from Tangerine are subjective and will vary depending on the individual reader and their own life experiences.