The first is an opinion column by Walter Isaacson in the New York Times entitled "The Genius of Jobs". To me it is a good glimpse of the tone of the biography and well worth a read. Here's the link: http://www.nytimes.com/2011/10/30/opinion/sunday/steve-jobss-genius.html?pagewanted=all
Another is his sister Mona Simpson's eulogy for her brother Steve that was delivered on October 16 at the memorial service at the Stanford chapel. Very touching. Here's the link: http://www.nytimes.com/2011/10/30/opinion/mona-simpsons-eulogy-for-steve-jobs.html?pagewanted=all
Jean-Louis Gassée, who worked with Steve at Apple and who is featured in the Isaacson biography, writes his own review entitled "Steve's Bio: A Personal Perspective", which I found to be enlightening. It can be found here: http://www.mondaynote.com/2011/10/30/steve%E2%80%99s-bio-a-personal-perspective/
Finally, I find Steve's commencement speech at Stanford University at 2005 to be incredibly motivational. Here's the link: http://www.youtube.com/watch?v=UF8uR6Z6KLc