I recently found some very interesting free books, treating especially open innovation, but also innovation in general.
The blog belongs to Stefan Lindeggard, and the books are:
Social Media for Corporate Innovators and Entrepreneurs: Add Power to Your Innovation Efforts – http://15inno.contentrobotllc.netdna-cdn.com/wp-content/uploads/2012/08/Social-Media-for-Corporate-Innovators-and-Entrepreneurs.pdf
Making Open Innovation Work – http://15inno.contentrobotllc.netdna-cdn.com/wp-content/uploads/2012/08/Making-Open-Innovation-Work-by-Lindegaard.pdf
Innovation Insights and Exercises by @Lindegaard – a Workbook – http://15inno.contentrobotllc.netdna-cdn.com/wp-content/uploads/2012/08/Making-Open-Innovation-Work-by-Lindegaard.pdf
Thank you Stefan for sharing this resources with us,
You can also join his group on LinkedIn at http://www.linkedin.com/e/gis/54595