RSS (Really Simple Syndication) is a format of publishing information headers based on XML language. It allows you to check on an ongoing basis if there is any new information on a website about a topic you are interested in. RSS information will automatically notify you about that immediately once it is published.
The information may be downloaded with use of an RSS reader. Some mail programs have that functionality. Furthermore, there are plenty of RSS readers available on the Internet, most of which are free. Remember, however, to check for which operating system is the given program intended and install the suitable version.
Once the program is installed, you can just click the interesting types of information to read. From now on you will be informed by the program about new updates on a website. Each time you will see the title and header of the information. It is enough to click the title and you will be taken to the place of the website where full information is published.