Part numbers should be in the instructions, though I need to add number of.
Sanding should be minimal, clean joint surfaces, and some of the rear facing angles on the jowl. And of course incidental hairs etc.
Get a 1/4 inch hex chuck drill, put it in a screwdriver handle and hand ream the holes where support material is in place, I should post a photo on this.
I suppose I should do an assembly video, but it's been very busy in RL right now.