So I'm following a youtube tutorial for some character modeling and there's this weird crease down my center face line when I have the subsurface mod on. I've tried smoothing the verts but then my shape is too deformed. I've also tried to create some more geometry to make the vertex less "pointy" looking. Here's a pic:
Note: my answers are for the old Blender 2.79. Not sure how to do it in new Blender 2.8.
Try removing doubles. Select all vertices in edit mode, press space bar, type : remove doubles and press enter. (I think it's now called "Merge By Distance" in Blender 2.8?).
Or select the edges-in-question and lower their Mean Crease (press shift+E, and type in -1 and enter).
If that doesn't work, can you upload your blend files?