Linked items not obvious unless you know what to look for - User Feedback - Developer Forum
How to Duplicate and Link Objects in Blender | Brandon's Drawings
How to Link Materials / Modifiers in Blender 2.91 (Copy materials / modifiers to multiple objects!) - YouTube
Where is the apply option in modifiers for 2.9? - Blender Stack Exchange
How to use Array modifier to model a chain link in Blender – Usama Babar
How to assign materials to objects and faces in Blender - Artisticrender.com
Introduction — Blender Manual
How to copy a single modifier to multiple objects
Outlines linked Objects - Basics & Interface - Blender Artists Community
How to Copy Modifiers in Blender — Blender Daily
Introduction — Blender Manual
mesh - Add the Same Modifier to Multiple Objects at Once? - Blender Stack Exchange
Lukas Stratmann - Blender 2.8 - Production Tips, Link Data, & Modifiers - Source Files
Array Modifier — Blender Manual
Hook Modifier — Blender Manual
I made a python script to apply Array Modifiers to get independent objects. Link and "why?" in comments : r/blender
How to apply modifiers in Blender - Artisticrender.com
Data Transfer Modifier — Blender Manual
How to Apply Modifiers in Blender - cgian.com
Must Know Modifiers & Linked Duplicates | Learn Blender 2.9 / 3.0 Precision Modeling | Part- 30 - YouTube
Editing Multiple Modifiers In Blender Using This Secret Hotkey (It's Alt) - YouTube
New Operator: Copy a single modifier to all selected objects - BlenderNation
