It took over 4 hours to assembly this bloody thing. Suggest you buy a hex screwdriver...which made assembly very easy, after the 3rd hour. Only attack 1 bolt to each shelf and then add the back panels.add other bolts and tighten. Assemble the entire thing on the floor with room to move around. Good Luck..also refer to photo on the product page.INSTRUCTIONS SHOULD HAVE BEEN INCLUDED W?PRODUCT.