Summary: Beautiful writing, made better by her distinctive and haunting narration.
There can be no criticism about a book like I Know Why the Caged Bird Sings, not just because it is the writing is so beautiful, but because it is distinctive and ground breaking.
Angelou was 41 when I Know Why the Caged Bird Sings and she had already been a popular singer with albums, an actress and playwright, a director and producer of a documentary, worked directly for both Malcolm X and Martin Luther King, lived outside the US for several years and much more. Writing was a later career for Angelou, and she is probably best known today as a poet and writer, but she won a Tony for her acting and three Grammies.
I Know Why the Caged Bird Sings is the first book of Angelou’s that I have read. It is an autobiography of her early life (until she was 17.) It is not strictly chronological, but story oriented. The stories are mostly in chronological, but there is some jumping around to accommodate different threads of a story. According to Wikipedia, there are at least some who want to label Angelou’s autobiographies as Autobiographical Fiction. After having read Sarah Arthur’s biography of Madeleine L’Engle, I basically assume that many authors are fictionalizing at least parts of their biography both for literary values and to smooth out the story.
I am also not at all surprised that I Know Why the Caged Bird Sings has both been widely assigned in high school and college literature classes and the subject of campaigns to ban it. Angelou, frankly and clearly, describes her rape at the age of 8 by her mother’s then boyfriend. And then later describes her own exploration of sex which resulted in pregnancy and the birth of a son, three weeks after she graduated from high school at 17.
Summary: Tragic, often hard to read, but important reminders that the problem of evil is not easily solved.
Summary: An introduction to the concepts, critique and future of Critical Race Theory.
Summary: A Church that is asleep to injustice and racism is blind to the heart of God. 
Summary: Classic children’s fantasy. I think probably the best children’s epic fantasy series.
Takeaway: Lots of classic Lewis here.
Summary: The child of human and alien parents must find his own way.
Summary: An imperfect prodigal returns home to an imperfect father.