Thanks for this. How do you navigate 4chan.org?

• the top level /g/ and /t/ etc are the boards. Like territories on Stacker news or subreddits
• then click "catalog" to see an overview of posts in a grid view. If you don't you'll get a list of posts and the comments within which is hard for newbies (4chan lingo "newfag") to navigate.
• If you click on a post scroll as little as possible. Use the "top" and "bottom" buttons instead
• The comment section inside a post isn't threaded. They have ">number" referencing instead. This lets you answer multiple comment paths simultaneously. Threads can merge and split paths arbitrarily which is much better than Reddit, SN, Twitter etc.
• url /board/searchterm gives you the grid view of the catalog but with a search function. e.g. /t/kirk searches for the one Chalie Kirk post in the torrent board
• Posts auto delete themselves after some time
• To post or write replys you don't need an account but solve a captcha

And sorry, I have no idea of what to do with the "magnet" link. Just putting it in the browser doesn't appear to work.

Magnet links are for torrents. You need a torrent client instead of a browser (and a vpn preferrably).

Torrents are like Nostr but for files only. And more decentralized than Nostr and 20 years old than Nostr.