Duplicate And Duplicate Linked | Blender Tutorial - YouTube
Blender Duplicate Object with Shortcut - cgian.com
Copy/Paste – Blender Knowledgebase
Repeat Duplicate? (multiple copies spaced out evenly) - Basics & Interface - Blender Artists Community
Creating a new collection just duplicates objects? how do I get them to actually move to the new collection without being in the general "collection"? : r/blenderhelp