This book is a practical guidebook, a technical manual, a tutorial. It is written for people who have a strong desire to create the future in which there will be many more generations of humans and humans will have meaningful amount of liberty. This book will instruct its readers on how to contribute to the attainment of this future. Different readers will have different beliefs and different knowledge gaps as they start reading this book. In order to make the introduction smooth for everyone for whom this book is intended, the book has multiple introductions. The reader should pick an introduction based on his own starting point. It is unnecessary to read more than one.