Setup couldn't be easier!  It simply unfolds.  Screw in the bottom center-peg and lightly push the top piece in and you're all set.  It's set up in the corner next to my computer desk and the wall.  It holds various paper pieces and small computer components with ease.  Don't put anything fragile on this unit if you're using this unit on a carpet as the unit doesn't feel as sturdy as it would on a more solid ground.  Additionally, the bottom center-peg is slightly shorter than the legs of the bookcase.  This may be a slight manufacturing defect with my unit (and it wasn't bad enough to prompt me to return the unit), but I thought it was worth noting.