The pins fit into the holes with cams to tighten and snug them down.
These take a phillips screw driver.
Part way there!
This is the door unit
The door hinge
Ikea Journalist Shelving Instructions with pictures
If you have garage sale shelving from IKEA, then theses pictures will help you. Getting shelving in pieces can be fun.
These are the top and bottom of a drawer or wood shelving unit.
The clips need to be attached to the framing.
The rounded side goes up. This is what holds the shelving.
The you can install the lower shelf first, and then the sides, and then the thin back panel.
Last goes the upper portion.