For startups, -Art of the Start by Guy Kawasaki -Blue Ocean Strategy -High Tech Startup by John Nesheim -The Power of Unfair Advantage by John Nesheim -Crossin

For startups, -Art of the Start by Guy Kawasaki -Blue Ocean Strategy -High Tech Startup by John Nesheim -The Power of Unfair Advantage by John Nesheim -Crossing the Chasm These are all helpful for startups.