D&D Compendium now has a Discord server!
Communities, Guides, and Extra Content for the Out of the Abyss module from Wizards of the Coast.
Buy the book from Game Kastle to support the D&D Compendium!
Out of the Abyss DMs Discord Server
Out of the Abyss DMs Facebook Group
Elven Tower Guide
Sly Flourish Guide
A DM's Thoughts on OoTA
Some suggestions from a Reddit user
EN WORLD Out of the Abyss Resource Collection
OoTA Random Encounter RNG
Out of the Abyss Walkthrough Poster