This link --> http://www.cbsnews.com/8301-18560_162-57562201/how-to-design-breakthrough-inventions/ came highly recommended and I am half way through but as a postgraduate in Industrial Product Design I thought I should share it.

Its about IDEO the company that came to life through many innovative products like the first apple computer mouse ! David Kelley founded IDEO in Silicon Valley - I suggest you jump over on the link above and find out more.