I attached what mine look like with the "YouTube" category open. As you can see, the concept works nicely for a lot of types of content. And I don't even need a YouTube account.
Usually, new items will be marked as unread, which will be marked as read once you open them. This and categories makes it easy to keep track of a lot of sources without missing anything.
And that's really it. Here's a website explaining the concept in way more detail: wpmayor.com/beginners-guide-simple-syndication-rss/
