Understand handling messages in Node-Red: basics and tips for your every day Node-Red work
The thumbnail says "A-V" not "A-Z" as I don't pretend to give a full guide of everything on this topic, as Node-Red is growing fast and there is always something new. But based on my experience and working in Node-Red, I think this is what you should be aware of not to run in to traps and rabbit holes in Node-Red.
Example flow: https://github.com/nygma2004/km/blob/...
Chapters:
0:00 Intro
0:40 Content
2:49 Basics
7:08 Routing messages
8:30 Splitting arrays
15:27 Splitting object
17:21 Storing data in the message
21:55 Sending data from function node
24:18 Conditional output
26:29 Node warnings
27:50 Asyncronous output message
29:47 Multiple messages on one output
31:38 Multiple messages on multiple outputs
38:21 Outro