Best Introductory Resource for the Noahide Covenant
Seven Colors of the Rainbow is an easy read while providing a general overview of the history and laws of the covenant given to Noah and his descendants. Each of the seven laws in this ancient and ongoing covenant is tied to one of the colors in the rainbow which God set for a sign, a reminder, between heaven and earth. After reading this book, readers can never again see the rainbow without remembering that, like Noah, all mankind can achieve righteousness through adherence to these seven laws. This is the first book I recommend on the subject.