Divisadero will appeal most to those who are deeply interested in identity and perception. This is one of those rare novels that successful explores a philosophical issue, much as Dostoyevsky does with Crime and Punishment.
If, however, you are looking to a traditional novel about one person or a family, you'll find the dream-like shards of this book disturbing and difficult . . . rather than rewarding. You might want to read another novel instead.
Let me take you into Mr. Ondaatje's theme. Who are you? Most people would answer in terms of their name, their associations, their work, where they live, and their experiences. Michael Ondaatje demonstrates a different point of view; you are who you want to be. You can choose to die to who you were born and become someone else. The ease of doing that is increased if you go where no one knows you. But, your perceptions will be permanently framed by your life experiences in a way you cannot escape. Witness the excellent advice to first novelists: Write what you know. If you do that, you can change who you are (become a novelist) but you'll see the world through the lens of your experience even when you shift your focus to new ground.
The primary character in this book, Anna, lives this experience. She grows up in a twin-like existence with an adopted sister, Claire, and a near-brother, the neighbor boy Coop, who works as a hand for her family. The distance between them is broken when Anna and Coop begin to want more from one another. That idyll is broken by an event so terrible it will stay with you in nightmares. Nothing can remain the same.
But what will happen? The story develops from there to follow the disconnected lives of Anna, Claire, and Coop. Anna becomes a writer and Divisadero continues in investigating her research and writing about a poet and novelist. From there, Mr. Ondaatje peels the onion once more to take you into the life of the poet and novelist and his identity and perceptions.
As the stories play out, you'll be fascinated by many sub themes such as the way that we are often twinned with another. How do such twins develop separate identities? In addition, Mr. Ondaatje describes a universe that seems to be operated by unseen hands or laws that cause memes and experiences to recur.
After finishing the book, I was struck by how much meaning Mr. Ondaatje was able to draw out of a tragic event. I suggest you mull over the same point and spend some time thinking about what has happened to you . . . in terms of its meaning, rather than just its lessons.
Great work, Mr. Ondaatje!