That's correct, the authorized autobiography is by Walter Isaacson, and it is simply titled "Steve Jobs." I, Steve: Steve Jobs In His Own Words makes for a nice companion piece to that book, however, as it offers a selection of more than 200 quotes from Steve Jobs's entire career.
Hearing Jobs speak in his own words can tell you much about who he is. Primary sources can tell as much a story as information in a biography. I will use Mr. Jobs words as a way to think about how not to live an ordinary life.