Tags and favorites
Folders are one way to organize; tags and favorites give you a couple more.
Tags
Add tags to a note and browse everything with that tag from the sidebar. Tags autocomplete from the ones you already use, and you can rename or remove a tag everywhere at once. Because tags live in the note’s frontmatter, they travel with the file. The markdown guide covers both ways to write one, in frontmatter and inline in the body.
Favorites
Star the notes and folders you return to most and reach them in one click from the Favorites tab. Reorder them however you like so your most-used notes stay at the top.