Being a long time OSS user and now a member of Connexions community, I advocate the virtues of OSS and open textbook, and take a tangible step towards writing and sharing a book entitled "Engineering Computation with Spreadsheets".

The hidden hands of Driscoll (2005), Neuman (2006) and Norusis (2009) are leading me in the design of this book. Inspired by Driscoll, I employ concept maps and scenarios in the opening section of the chapters. I follow Neuman’s footsteps to structure the chapters and I try to emulate Norusis’s friendly narrative style in writing this open textbook.