If you've not logged into Facebook for a while, the homepage won't display the "most recent" posts but the "top news," which sometimes includes your friends' interactions with people you don't know. Just press "Most Recent (238)" or whatever and it'll bring it back to what your mates have been doing, in reverse chronological order, as is traditional. Which I believe is what you were asking.
Meanwhile! If you're just bored of people you barely know but you do have added as friends appearing on your homepage, you can adjust which of your friends appear in your newsfeed. It usually only displays posts from the 100, 150 or 200 (I can't remember how many, precisely) you interact with most. I can't remember how precisely to alter it, it's something in "news feed settings" or some such, very much tucked away. It automatically defaults to just the ones you interact with most often, and updates that list as and when it gets bored. Do a little snooping, it'll turn up.