Navigating the Org-roam Buffer
The Org-roam buffer uses magit-section, making the typical magit-section keybindings available. Here are several of the more useful ones:
M-{N}:magit-section-show-level-{N}-alln:magit-section-forward<TAB>:magit-section-toggle<RET>:org-roam-buffer-visit-thing
org-roam-buffer-visit-thing is a placeholder command, that is replaced by section-specific commands such as org-roam-node-visit.