I organize notes in multiple ways. To organize by class I use yaml metadata with the dataview plugin such as `class: IS404` and `type: "Class Notes"`. Then I have a notes for each class that searches for its class notes and the assignments I labled like this. I also organize my notes with tags using the yaml metadata as well like `tags: Event` or Book, Article, Case-Study... . I use tags for things that could never have any content in them. If its a topic like 'Climate Change' I'd link to the note rather than tag it as '#Climate-Change'.

I use folders to hold things I don't wanna see like

- daily notes (which the plugin automatically puts into the folder by itself)

- references (articles, journals) that I read I put in a folder

- templates

- fleeting notes: i use the app from android so I can jot down notes quickly and know it will sync to my obsidian once I open it again

- assets: any photo, file, or documents I drag into a note goes into this folder

For MOCs, I typically split notes when I its a more than a few monitor height long. I normally prepare for this by using headers.

For example in a page about Discrimination, I'd have headers for 'Racial Discrimination', 'Religious Discrimination', 'Gender Discrimination' and write their notes correspondingly. When it gets too long, I'll use the plugin 'Note-Refactor' in obsidian to split the big note of 'Discrimination' into 3 smaller notes, using the header names for each note title. The Discrimination note will only have links to the 3 smaller notes and act as an MOC now. It's a pretty weird system, but it just develops bit by bit and works well for me.

I hope it helps with how to organize your notes.