RSS (Rich Site Summary) is a way to deliver regularly changing web content. Having an RSS feed allows you to broadcast your blog posts directly to readers that continue to follow your content.
To set up a RSS feed on your website's blog:
Example: http://yourwebsite.com/blog
Click into your browser's URL field, then add the following string at the end: ?format=rss
So that it looks like this:
http://yourwebsite.com/blog?format=rss
Now, copy the link and submit it to your desired RSS feed or provide it to your potential subscribers in a hyperlink.