Not aware of many good resources since it's pretty new, but you can probably look into the Zettelkasten method.
The gist is to make your notes atomic and link them together whenever possible. [[ links provides auto-complete, and the backlink plugin tells you what notes links to this note, and what notes mention it but don't explicit link it.
The graph view is for discovery and navigation mostly. It lets you discover clusters, and identify "orphan" nodes that aren't connected anything. That might inspire you to think of connections and strength your knowledge network.
The gist is to make your notes atomic and link them together whenever possible. [[ links provides auto-complete, and the backlink plugin tells you what notes links to this note, and what notes mention it but don't explicit link it.
The graph view is for discovery and navigation mostly. It lets you discover clusters, and identify "orphan" nodes that aren't connected anything. That might inspire you to think of connections and strength your knowledge network.
Hope that makes sense!