With plenty of research and studies that back positive parenting included, Practical Positive Parenting: How to Raise Emotionally Intelligent Children Ages 2-7 by Empowering Confidence ($23, originally $25) by Hannah Brooks is a great resource. It offers five simple steps for positive parenting, understanding of how children think and feel and different developmental stages, information on healthy discipline and parent personality styles, simple-to-fix mistakes, exact steps with dealing with anger, in-real-life examples, and more.