Prof Russell Barkley is a leading authority on ADHD. He has fascinating lectures on the relationships between EF (Executive Functioning) and the symptoms of ADHD. I found them insightful.

• 30 Essential Ideas you should know about ADHD by Russell Barkley is a 27-part YouTube playlist.
• ADHD: Intention Deficit Disorder (4 mins)
• ADHD: Motivation Deficit Disorder (2 mins)
• ADHD: Emotion Regulation (6 mins)
• ADD: Inhibitory Failure Disorder (5 mins)
• ADHD: More Accountability, Not Less (4 mins)
• Use Your Executive Functioning Brain to Override Impulse (7 mins)
• ADHD or 'sparkling personality'? (5 mins)
• ADHD Emotional Impulsiveness (5 mins)
• Adult ADD: You Know What To Do But Can't Do What You Know (1 min)
• ADHD Splits Brain Into Two, Knowing/Doing (1 min)
• Hyperfocus vs Perseveration (1 min)
• The Importance of Emotion in Understanding and Managing ADHD (3 mins)
• Is ADHD Different in Women? (5 mins)
• ADHD Is Not A Gift (3 mins)
• ADHD: Diagnosis Acceptance (3 mins)
• How You Treat ADHD Based Off Science (14 mins)
• The Neuroanatomy of ADHD and thus how to treat ADHD (38 mins)
• ADHD: How Normal Self Control Develops (26 mins)

ContinuingEdCourses: Courses for Mental Health Professionals has a series of courses by Prof Barkley (the links below are long narratives, possibly transciptions of his lectures?)

• ADHD in Children: Diagnosis, Assessment, and Management by Russell Barkley.
• ADHD: Nature, Course, Outcomes, and Comorbidity by Russell Barkley.
• Oppositional Defiant Disorder: The Four Factor Model for Assessment and Management by Russell Barkley.
• ADHD in Adults: Diagnosis, Impairments, and Long-Term Management by Russell Barkley.
• Executive Functioning: Nature, Assessment, and Management by Russell Barkley.
• ADHD Goes to School: Providing Teachers and Parents with Specific Management Strategies by Russell Barkley.

Books:

1. Taking Charge of Adult ADHD (294 pages, 2010) by Russell Barkley.
2. Adhd: What Everyone Needs to Know (216 pages, 2016) by Stephen Hinshaw.

Books for Couples:

1. Is It You, Me, or Adult A.D.D. (369 pages, 2008) by Gina Pera, who maintains this website: ADHD Roller Coaster.
2. The ADHD Effect on Marriage (233 pages, 2010) by Melissa Orloff.
3. The Couple's Guide to Thriving with ADHD (240 pages, 2014) by Melissa Orloff and Nancie Kohlenberger.
4. When an Adult You Love Has ADHD (408 pages, 2016) by Russell Barkley

Misc resources:

1. ADHD: Insights from Neuroimaging and Genomics (46 mins) — lecture by Philip Shaw (recommended by Prof Barkley).
2. Understanding Girls with ADHD (64 mins) by Ellen Littman describes gender-specific aspects of ADHD, especially how it affects women.
3. ADHD Lectures by Prof Barkley.