Group friends into Friend Lists and use them to filter your feed.

The next step is to group friends into what Facebook calls “Friend Lists.” Friend Lists are private friend groups that no one ever sees but that you can use for privacy – for example, sharing personal content (like photos) with only some of your Facebook friends. You can also use them to create filtered views on the home page stream so that you only see updates from certain types of friends – like “Best Friends,” “Work Friends,” “High School,” etc.
To create Friend Lists, go to the Friends tab and click “Make a New List” on the left side of the page.