News feeds tell you when websites have added new content. You can get the latest headlines in one place, as soon as they are published, without visiting the concerned websites.
You first need what we call a news reader. This is a piece of software that checks the feeds and lets you read any newly added articles. There are many different versions, some of which are accessed using a browser, and some of which are downloadable applications.
Browser-based news readers let you catch up with your RSS feed subscriptions from any computer, whereas downloadable applications let you store them on your main computer.
Once you have chosen a news reader, all you have to do is to decide what content you want it to receive.