Have you seen the article on nonduality in the wikipedia? It’s listed under nondualism. Read it here: en.wikipedia.org/wiki/Nondualism.
The article has lots of gaps to fill. I’m not going to point to any of them, nor will I tell you what I’ve contributed. I’ll only say that if you have any extra time, jump in and contribute something.
There should be several pages on wikipedia for nonduality or nondualism. One for each of the traditions. One for each of the nondual perspectives. One for practices. There are so many ways to break down the topic.
What is needed is an encyclopedia of nonduality, compiled by a number of selected authors. It would be a monumental work, wouldn’t it?
It feathers into the topic of getting books published. I’ll address that in the next entries.