Is there a setting to send me an email when someone comments on an "Answer" I posted? I poked around in my profile settings, and didn't find anything.
The email settings have just been changed (see Control the types of email you receive via our new Email Settings feature, but I believe the setting you are looking for is:
Inbox
Answers to your questions, comments, chat notifications, and more
You can select Weekly, Daily, 3 hrs, or Off
I found a thread about removing the US Keyboard Layout from Windows 10. I couldn't comment because I have an awful reputation, so I answered instead.
Please don't do that. Answers that are not answers will be deleted.
You can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. Please read Why do I need 50 reputation to comment? What can I do instead?
As for the question/answer you are referring to, your (now deleted) answer looks more like a new question. Please ask your own question (referencing the other one for context if it helps).