RSS

The problem of easily consuming content (like blog entries or news articles) from different sources is almost as old as the web itself. Of course you can always visit each website individually, but that can be a bit annoying - especially if you want to get the newest entries from many or only infrequently updated websites. Following official profiles on social media sites, which linked to each new entry, was used as a workaround by many people, but with RSS there is an existing, even better solution.

Functionality

Websites can offer one or even multiple RSS feeds. These RSS feeds contain a list of the latest entries of a website (or specific sections of a website). Either they contain the whole entry itself or they at least contain a little teaser, that links to the whole entry on the original website.

Readers

To read and manage your RSS feeds you should use a RSS reader.
Popular apps are Reeder and NetNewsWire. There are also RSS web services, which let you read RSS feeds via their website and sync the read status of entries between devices. A good example for such a service is Feedbin.

Formats

There are three different formats for RSS feeds. One is the best and most modern JSON-based JSON format. The other two ones are the older, but wider supported XML-based RSS format and Atom format.
Every good RSS reader supports all of these formats though. It determines by itself which one of those formats is offered by a website and chooses the right one automatically for you. So this is nothing you usually need to think about as a reader.

My Feed

Of course this website has also had a RSS feed since its inception. It should be automatically found by most RSS readers by just pasting in my domain, but if you want to paste in the direct link to the feed manually, here it is:

JSON

https://yannikbloscheck.com/articles/feed/json/

XML

https://yannikbloscheck.com/articles/feed/xml/

Conclusion

As you can see RSS is a proven, open and easy way read entries from different sources. So maybe give it a try yourself!