QuiteRSS does not come populated with newsfeeds. Here are some newsfeed lists that will help beginners get started.
DMOZ (scroll to bottom of page)
Mathaba Alternate News
I forgot to add (and can't edit), if you know of other such lists, please post them, too.
U.S. Government RSS feeds
RSSsearchhub - a feed search engine
Academic Feeds and Alerts