Windows 10 is available now and it's getting very good response from the users, one of the most core reason behind the success of windows 10 is windows insider program, which helped Microsoft in shaping and developing it's new window. 

This Book will tell you: 
What windows insider program is ? 
What's make it so special and important? 
How it's work ? 
How it help in development of windows 10 ? 
How to join windows insider program? 
How to opt out of it, if I didn't like it ? 
What's windows 10 have special ? 
How to become an developer with windows insider program? 

This Book will tell you all. 
More over if you are a tech enthusiast, then this book is must for you, if you want to know about window 10 and insider program, it will guide you, how to get new upcoming features of windows before others.