I know there are a lot of these space biographies around but this is well written and relatively short. There was not a lot of extra background (this is a feature I like about this book) about his childhood and his family, though there are some stories from his childhood under Nazi occupation. The issues surrounding his death, in my opinion, are handled well and not indulging in the all the conspiracy theories that surround Gagarin's death.
I enjoyed this book and Yuri Gagarin comes out of this book as a hero. It is worth reading and another book to accompany this I would also recommend is Two sides of the Moon by David Scott and Alexi Leonov.