Read Guy Kawasaki’s The Art of the Start: The Time-Tested, Battle-Hardened Guide for Anyone Starting Anything.
Whether you are starting a business, non-profit, division within your company, or church plant; or if you are launching a new product or service within your company, this book will be worth your time and help improve your chance of getting off the ground well.
I regard it as one of those extra-useful books because, when reading it, I felt like I was reading about a lot of my own mistakes. That was a humbling experience — especially because it actually took a second read for the lights to really come on.
So maybe read it twice.