Not wishing to enter into a discussion about the merits of Islam, I will keep my comments limited to the quality of the book itself and my impressions of Muhammad as a result of having read this biography.
The book, with the exception of the footnotes referring to prophets and the symbols also referencing pronunciations of Arabic words, it is straightforward in its presentation. It is an easy read with large print. There are times when the use of words is not grammatically correct, but I attribute this to imperfect translation. It's difficult for me as a writer to overlook those, but as an English speaker with only rudimentary knowledge of one language foreign to my own, I appreciate what a daunting task it must be to translate a manuscript to another language and English is not the easiest. The meaning of the author's statements come through with minimal analysis.
Most importantly, "Life of Muhammad" greatly enhanced my knowledge and understanding of this prophet. I came to learn of the kindness and love Muhammad had in his heart for humanity. His engagement in warfare and conquering his enemies has long been a sticking point for me on acceptance of this spiritual leader, but as described in this book he took up war as a last resort against persecution of his followers. He approved of war in self-defense only and whenever those engaged against him wished to talk peace, he was always ready to lay down arms for an honest negotiation. For his time and place, he was on the cutting edge of human rights. I feel much better about Muhammad due to the information in this book.