We try to address the first question in our monthly webinars, talking about selecting materials, finding volunteers, creating task instructions, and keeping people motivated.
A rough recording (the plumber interrupts partway through) of our December webinar is recorded at https://youtu.be/xdy64yZbPHs?t=469 and the first 22 minutes from the timestamp attempt to be platform-agnostic.
Any suggestions would be welcome.