​Audio Book: 

Taking Control of Adult ADHD. Second Edition. By Russel Barkley, PhD

If you're already diagnosed and familiar with treatment, I recommend jumping ahead  to Steps 2 and then 4. 

ADHD Coaching & Remote-Workers weekly group:

ADHD-Collective: When nothing holds the day in place, ADHD fills the gaps.
https://adhdcollective.com/

ADHD Psychotherapy and ADHD therapy group:

ADHD-Focused therapists. Founded by Karla Schlags, LMFT
California Integrative Counseling Center


ADHD YouTube Channels:
How to ADHD By Jessica McCabe
https://www.youtube.com/c/HowtoADHD

Therapy in a Nutshell by Emma McAdam, LMFT
https://therapyinanutshell.com/