You can disregard all the negative reviews about pre-drilled holes.   ... All you need to assemble is a drill.   The self-tapping screws are provided.
Assembly takes about an hour if you do it right, measuring and leveling as you go.  The shelf looks very nice.  Only thing is that each shelf is 11" wide, 
not 15.  This is because of the frame.  Other than that, I love it.   I put all of my African Violets on it.  Love Wayfair.