I find fiction from the early 20th century hard to read at times. This book was a bit hard to follow, but I still enjoyed it. This edition has an Afterword, which I found very useful. It might have been helpful to read the Afterword first, as it talks about the inspiration for various sections of the book -- which I think would have been useful while reading relevant sections.
Also related to the Afterword: I think Toomer's internal debate with his racial identity (including his desire to not have one at all, as he saw race as a social construction) would have helped me better understand some of the characters in the book.
Some of my favorite insights from the Afterword:
Very touched by his care for his aging grandparents, and his close relationship with an uncle.
Toomer witnessed firsthand the ebb and flow of the Great Migration.
Toomer's purpose, in writing Cane: to bear witness to the passing of an epoch (including the singing of spirituals). "Cane was a swan-song. It was a song of an end. And why no one has seen and felt that, why people have expected me to write a second and a third and a fourth book like Cane, is one of the queer misunderstandings on my life."
Toomer in a letter in September 1923: "My racial composition and my position in the world are realities which I alone may determine....As a unit in the social milieu, I expect and demand acceptance of myself on their basis. I do not expect to be told what I should consider myself to be."
I was intrigued to learn that Toomer was a student of Georges I. Gurdjieff, Russian mystic and psychologist.
For Toomer...fragmentation, or duality, is the very condition of modernity. It cannot be "cured," any more than the gap between the conscious mind and the unconscious can be obliterated.
Toomer...boldly declares that this fragmentation is, ultimately, the sign of the Negro's modernity, first, and that the Negro, therefore, is America's harbinger of and metaphor for modernity itself.