You're a very lucky person then! Sadly I'm at around the 1,000 friends mark and I have a feeling it'd be a bit too much work to make my timeline useful again.
Just look at your feed. As soon as you see someone you don't care about just one click hide them or unfriend them (if socially possible).
If you see a post from a page you don't care about, then one click unfollow them.
It's really simple. Their newsfeed algorithms are actually really awesome at figuring out the rest once you give it a tiny bit of feedback like I mentioned above.
It's like going to a great restaurant, ordering five times as much as you can eat and then complaining about the food.