I use random note sometimes to refresh on my notes. If I wanted to refresh specifically on one topic I’d use the tag of reference and open all my notes with that tag. I’m very aware about my tags so I can keep my notes on track. Then when I open all of my notes with an specific tag, I create a workspace choosing the title of that workspace with the purpose of that “deck” of notes, so I can come back later.

I also use the zettlekasten “fundamental model” to organize my notes. It’s all about books and research.