I want to make available to my volunteers the dates & times that I have open for volunteering/helping (they would be able to go into this doc and sign up for a date and time . . . edit it). I would like to share these dates with them through Google Docs. If a parent does not have Google Docs how can I share it with them so that they can sign up/edit in this Doc?
As long as you set the sharing permissions to be "Anyone with the link... can edit," people don't even have to have a Google account to write on it!
Here's how to set it up: