General mutual aid how-to guides
The Neighborhood Support Network NYC Guide:
A thorough guide with a variety of how-tos.
AARP: How to Start a Mutual Aid Group Guide
Mutual Aid Medford and Somerville: A great set of resources for a non-tech volunteer group to get up and running
Vermont Mutual Aid: Mutual Aid Coordination Toolkit
Vermont Mutual Aid: Organizing Steps List
Database of Localized Resources During COVID-19: By Shadia Fayne Wood, one of the best maintained databases of resources for mutual aid groups.