All of these are affiliate links, so they would send me a buck or two when you purchase through the link. If you want to just search for them on your own, or want to buy somewhere other than Amazon, that's totally cool too!
Authentic Kink: Create Your Best Experience by Princess Kali
Braving the Wilderness by Brené Brown
Come As You Are by Emily Nagoski
Conflict is Not Abuse by Sarah Schulman
The Dance of Anger by Harriet Lerner
The Dance of Connection by Harriet Lerner
The Dance of Intimacy by Harriet Lerner
Daring Greatly by Brené Brown
Designer Relationships by Mark A. Michaels and Patricia Johnson
The Ethical Slut by Janet Hardy and Dossie Easton
The Five Languages of Apology by Gary Chapman and Jennifer Thomas
The Five Love Languages by Gary Chapman
Gender Magic by Rae McDaniel
The Gifts of Imperfection by Brené Brown
How to Be a Woman by Caitlin Moran
The Husband Swap by Louisa Leontiades
The Jealousy Workbook by Kathy Labriola
The Joy of Conflict Resolution by Gary Harper
Love’s Not Colorblind by Kevin Patterson
Messages: The Communication Skills Book by Matthew McKay
More Than Two by Franklin Veaux and Eve Rickert
The New Bottoming Book by Janet Hardy and Dossie Easton
The New Topping Book by Janet Hardy and Dossie Easton
Nonviolent Communication by Marshall Rosenberg
Off the Relationship Escalator by Amy Gahran
Open by Jenny Block
Opening Up by Tristan Taormino
Outdated by Samhita Mukhopadhyay
The Polyamorists Next Door by Dr. Elisabeth Sheff
Relationship Agreements by Eri Kardos-Patel
Rewriting the Rules by Meg-John Barker
Righteous Discontent by Evelyn Brooks Higginbotham
Rising Strong by Brené Brown
Sex at Dawn by Christopher Ryan and Cacilda Jethá
Sex From Scratch by Sarah Mirk
The Smart Girl’s Guide to Polyamory by Dedeker Winston
Stories from the Polycule by Dr. Elisabeth Sheff
What Love Is and What It Could Be by Carrie Jenkins
Why Have Kids? by Jessica Valenti
Why Won’t You Apologize by Harriet Lerner
Polysecure by Jessica Fern
Kimchi Cuddles (non-monogamy comics)
Cuddlist (professional cuddling)
Polyamorous Misanthrope (advice)
I’m Poly and So Can You (advice)
The Radical Poly Agenda (blog)
The Selfish Activist (social justice)
Joreth InnKeeper’s site (blog)
Talking About Sex (resources for those with kids)
Off the Relationship Escalator (blog and solopoly information)
National Coalition for Sexual Freedom (NCSF)
Open Relationship Resources and the Open List
Joreth’s Relationship Commitments
The Word Privilege is Being Used in Two Ways by Siderea
Why It’s Painful And Scary To Talk About Transformative Justice, and Why It’s Time by Andy I
Building Up, Not Tearing Down by Franklin Veaux
Polyamory and Statistics, or “Why haven’t we found our third yet?” by Maxine
Love is Not Enough by Mark Manson
Dr. Evelin Dacker’s STARS model for safer sex conversations
Reid Mihalko’s safer sex elevator speech
But What Does Solo Poly Even Mean by Joreth InnKeeper
Can Polyamorous Hierarchies Be Ethical? Part 1 by Eve Rickert
Can Polyamorous Hierarchies Be Ethical? Part 2 by Eve Rickert
Yes, Abuse Can Show Up in Polyamorous Relationships by Ginny Brown
Abuse in Polyamorous Relationships by Shea Emma Fett
The Misagreement by Jeana Jorgensen