Are there any quick ways for a user to create their own alert for when a file is added, removed, or modified?

[jstern]

The site manager finds creating a rule to generate an alert to be unnecessarily complicated. Are there any quick ways for a user to create their own alert for when a file is added, removed, or changed?

[douglascrp]

How about this project? GitHub - shazada/cntz-document-notification: Alfresco Module to get Email notification on update of ... 

It can give you some ideas on how to achieve what you need.