Finding new information isn't really a challenge. You might subscribe to an industry specific magazine, read the latest books written on the topic you're following, or come across news on your social media etc.
RSS feeds are just another way of curating information from the sources you want without having to go to each individual website. I pay close attention to the technology industry, there are changes everyday, some of them important like security issues, some of them less so like phone leaks. The reason I prefer see everything from a source like Engadget is the simple fact that I won't miss anything.
Once setup, you will automatically receive all articles from the site you have subscribed to. So instead of just hoping that all of the relevant articles will be shared with you on social media, you can go through them and decide what is important or not. You don't need to ready everything, and in fact I only read a small percentage of the articles that come through. Most get skipped, some get skimmed and quite a few get saved to my Pocket. but because of the customers I serve, I need to stay up to date on the latest going on, especially when it comes to things like security and automation.
Getting started is actually really fast and easy. First, choose an RSS service. I use Feedly. It is truly free and I have never seen a need to subscribe to their premium plan. Feel free to take a look at the top alternatives though to see if something else might fit your needs a bit better.
If you don't like the user interface that Feedly has, you can just use it as a syncing service and there are lot of applications that will sync with Feedly to provide you your RSS feed.
Once you have signed up you can start by adding sources that may be of interest to you. If you have specific websites in mind, just pop open the search box and paste the URL and hit follow.
I would add fewer sources in the beginning so you don't overwhelm yourself with a bunch of junk, especially if you are not familiar with some of the publications that you are subscribing to.
And that is really it! From there, you can find the application that best fits your reading needs. I typically read my RSS feed on an Android device and my favorite application to do this is Press. It is no longer supported by the developer, but I have yet to find a better reading experience than Press, so I will use it until it stops working.