The Real Leadership Lessons of Steve Jobs
Walter Isaacson, Steve Jobs official biographer, has written a very interesting article, with the above title, for hbr.org.  To me it doesn't present any lessons, but describes how Jobs worked.  The danger of treating the article as a guide to leadership is that one may "make a dangerous mistake" by adopting some aspects of Jobs' style but not others and so miss the benefits, or worse.
But there is a lot to learn from Jobs and this article so, over the next week or two, I'll provide my interpretation of the lessons presented in the article, starting here with "Focus".

Steve Jobs' Leadership Lesson 1 - Focus

Isaacson describes how Jobs restricted his attention to a small number of matters, be they products, people or problems.  More generally, one could say that Jobs had a clear purpose and mission - consistent with Collins and Porras' company Vision approach.  A good leader clearly articulates the intent of the organisation and ensures the whole organisation understands it, and conducts itself in accordance with that purpose and mission.

Next: Lesson 2 - Simplify