Проверьте, i want to tell you about very interesting book "the fault in our stars". i read this book about 1 week ago. the fault in our stars is the sixth novel by author john green, published in january 2012. this book was written by john green. hazel meets a 17-year-old boy named augustus waters. he lose his leg. hazel is a young girl who has hard destiny she sick with a cancer. in order do not deep in the depression hazel enters a support group, where people who have cancer, trying to help each other. in this group she met augustus waters. she feel in live in him. i think,that this plot is very interesting.the most interesting episode of the book is the moment when they went to amsterdam. augustus confesses his love for hazel. hazel and augustus finally meet van houten. they was horrified by van houten's behavior. he was drunk.he started proceeds to insult hazel's cancer.

...about a very interesting book...
...by John Green... (в 3ей строке)
повторение, this book was written by john green не нужно
...he lost his leg...
...she felt in love in him...

Написано хорошо. Только небольшие коррективы.
I want to tell you about very interesting book "The Fault in Our Stars". I read this book about a week ago. The Fault in Our Stars is the sixth novel by John Green, published in January 2012. This book was written by John Green. 
Hazel meets a 17-year-old boy named Augustus Waters. He lose his leg. 
Hazel is a young girl who has hard destiny because she sick with a cancer. In order do not deep in the depression Hazel enters a support group, where people who have cancer, trying to help each other. In this group she met Augustus Waters. She feel in live in him. 
I think,that this plot is very interesting. The most interesting episode of the book is the moment when they went to Amsterdam. Augustus confesses his love for Hazel. Hazel and Augustus finally meet Van Houten. They was horrified by Van Houten's behavior. He was drunk. He started proceeds to insult Hazel's cancer.
P. S. В некоторых местах можно рассказать историю поподробнее. 
P. S. S. Хорошая книга!