To get updates from newsboat, use an RSS feed reader, subscribing to the link https://tty1.blog/feed/. You can also open the link to see a preview of the feed. For an explanation of what RSS is, check out About Feeds.
For a good terminal client to check your RSS feeds, I highly recommend newsboat, the client I use. The website has a comprehensive guide, but of course you can also run `man newsboat` to get information on using it.