Obsidian is marketed by Nic Milo as a tool for linking your thinking, which makes sense. But without Hookmark its bidirectional links are just to Obsidian notes, or pasted unidirectional links. So here’s a screencast on linking Obsidian notes to anything that has a URL:
See also:
Please let us know what you think of the video, what you feel I left out, etc. Feel free to share with the Obsidian community (discord etc.)
The video is also a general tutorial on using Hookmark to facilitate note-taking.