"Surely You're Joking, Mr. Feynman!" is about Mr. Feynamn, the man himself, his childhood days and it provides a glimsp on how his attitude helped him in his schooling years, and then to the Nobel Prize. The book also provides an insight into MIT and Princeton and the differences between these schools.
To sum it up, the book is a memior, although his english is not that perfect. Afterall, its American English.