Read Jonah
Read, read again, and then after that go ahead and read one more time. You can't over-read the book or passage you are study.
Read for the BIG PICTURE of your passage
After you determine the big picture of the book, you will want to create a purpose statement. After reading Jonah multiple times we come away with something like "Purpose: For the reader to ponder the question “are you okay with salvation belonging to the Lord alone?”."