Replied to a tweet by Tom Critchlow (Twitter)

“@jgmac1106 Thanks - been trying to get my head around webmentions for a while and still haven't figured it out....”

Tom, for the basics of what Webmention is you might try this intro article Webmentions: Enabling Better Communication on the Internet.

To get started quickly, just to have the notifications, you might try creating an account with Webmentions.io and put the endpoint into the of your site so you can receive them in the erstwhile on a separate service and worry about direct integration at a later date. As I recall Aaron Gustafson has a Webmention.io Jekyll Plugin for display and some of the outline is covered in this recent article by Max Böck.

If necessary, you can get help in the #Dev channel of the IndieWeb chat.