How can you get the most information from a book? Here are some suggestions that can help you effectively(有效地).

    Read whole thing.

    When you're learning something by reading, it's (important) to have a general idea than to understand every detail. In fact, no matter how (careful) you read, you won't remember or understand all of the details. So (remember) the main points will be OK.

    Decide how much time you will spend.

    If you know that you have only six hours a book, it'll be wise of you to adjust (调整)  (you). Never start to read without planning when (stop).

    Have a purpose.

    Before you begin, find out you want to read this book. If you don't have reasons of your own, you can't learn much. After you start to read, try to think of four questions: Who is the writer? What are the book's (opinion)? What are the reasons? What are the conclusions?

    Read it three times.

    You'll get the most out of the book after you read it three times — fast-reading for general ideas,  reading for understanding, reading for note-taking and remembering.