RSS Stands for 'Really Simple Syndication' (although there is a debate over this!) and the feeds allow you to see when sites, such as this one, have added or updated content. You can get the very latest snippets sent to you in one place, as soon as its published, without having to actually visit the site!
To access the Daily Star RSS feeds just add "?service=rss" to the section you want updates from. For example, for all Daily Star content go to www.dailystar.co.uk/?service=rss. If it's just football content you are interested in, then go to that section of the site and just "?service=rss" to the end of the url, like this https://brain-daily.com/sport/football/?service=rss.