Click an item in the sidebar.
If the sidebar isn’t shown, click Favorites, but you can customize this list at any time.
Following, which lists the set an option in News settings for the Today and other feeds to show only stories from the channels you follow.
Tip: You can stop some channels and topics—such as Business or Fashion—from being suggested in the Today feed. Scroll down to the channel or topic in the feed, click Use windows and tabs in News on Mac