Here are some great books on growth mindsets

Brain Rules by John Medina
The Brain That Changes Itself by Norman Doidge
Mindset by Carol Dweck
Soft-wired by Michael Merzenich
Bounce by Matthew Syed
Self Renewal by John Gardner
Peak by Anders Ericsson
The Art of Learning by Josh Waitzkin

Other Resources

Mindset Works has a variety of products and resources, both paid and free, that are built to help educators and parents change mindsets.  Among these, Brainology is one of the most popular.  

Growth Mindset Lesson Plan - by Khan Academy and PERTS

This lesson plan offers several fun activities that can teach youth that intelligence can be developed and that their minds are malleable. Great for mentors, teachers, and others working with youth in groups or even one-on-one.

Carol Dweck researches “growth mindset” — the idea that we can grow our brain's capacity to learn and to solve problems. In this talk, she describes two ways to think about a problem that’s slightly too hard for you to solve. Are you not smart enough to solve it … or have you just not solved it yet? A great introduction to this influential field.