When choosing a book that is right for you to read always make sure that you do the 5 finger test. Use the following steps:
If you get five ( 5 ) fingers up on one page, the book is too difficult to read independently. If you do not get any fingers up, but are reading very slowly and having a hard time with almost every word, you will not enjoy the book.(Maybe you should choose another book)
Also after you read try to remember what the story was about. If you do not know, you should choose another book.