The following are resources that I find useful and recommend:

Your Defiant Child, Second Edition
Eight Steps to Better Behavior
Russell A. Barkley and Christine M. Benton

Your Defiant Teen, Second Edition
10 Steps to Resolve Conflict and Rebuild Your Relationship
Russell A. Barkley and Arthur L. Robin
With Christine M. Benton

The Whole-Brain Child
12 Revolutionary Strategies to Nurture Your Child’s Developing Mind
Daniel J. Siegel, Tina Payne Bryson

The Power and Purpose of the Teenage Brain
Daniel J. Siegel MD

Brain Gym
Simple Activities for Whole Brain Learning
Paul E. Dennison, Gail E. Dennison

Rough Spot Training
A Manual For Helping Children Develop Emotional Control, Self-Soothing, And Behavioral Management
Terry London, Amor Monjes

1-2-3 Magic
Effective Discipline for Children 2–12
Thomas W. Phelan

Talking Back to OCD
The Program That Helps Kids and Teens Say “No Way” — and Parents Say “Way to Go”
John S. March MD MPH

Special Education
All About Tests and Assessments
Melissa Lee Farrall, Ph.D., SAIF, Pamela Darr Wright, MA, MSW, and Peter W.D. Wright, Esq

Wrightslaw:From Emotions to Advocacy, 2nd Edition
The Special Education Survival Guide
Peter W. D. Wright, Esq. and Pamela Darr Wright

All About IEPs
Peter W. D. Wright, Esq., Pamela Darr Wright, MA MSW, and Sandra Webb O’Connor, M.Ed.

The Out-of-Sync Child
Recognizing and Coping with Sensory Processing Disorder
Carol Kranowitz

Taking Charge of ADHD, Third Edition
The Complete, Authoritative Guide for Parents
Russell A. Barkley

Taking Charge of Adult ADHD
Russell A. Barkley, With Christine M. Benton

Self Help Books
When Perfect Isn’t Good Enough
Strategies for Coping with Perfectionism
Martin Antony PhD, Richard Swinson MD FRCPC FRCP

Get Out of Your Mind and Into Your Life
The New Acceptance and Commitment Therapy (A New Harbinger Self-Help Workbook)
Steven C. Hayes, Spencer Smith

The Happiness Trap
How to Stop Struggling and Start Living: A Guide to ACT
Russ Harris and Steven Hayes

Get Out of Your Mind and Into Your Life for Teens
A Guide to Living an Extraordinary Life (An Instant Help Book for Teens)
Joseph Ciarrochi and Louise Hayes

Fighting Invisible Tigers
Stress Management for Teens
Earl Hipp

The Bully, the Bullied, and the Bystander
From Preschool to HighSchool–How Parents and Teachers Can Help Break the Cycle
Barbara Coloroso

The Bully Action Guide
How to Help Your Child and Get Your School to Listen
Edward F. Dragan

When Your Child Is Being Bullied
Real Solutions for Parents, Educators & Other Professionals
J.E. DiMarco, M.K. Newma