Bought these to go with a completely overhauled den.  Although the instructions were not that great, as the just shows pictures with no real instructions, it wasn't that difficult to figure out.  Essentially just lay out all the boards and go ahead and put all the cam bolts and cam screws in each board.  Then look at the assembly photos and it is easy to tell which piece fits where.  These are HEAVY and come in three separate boxes.  I bought two and once I unboxed them, it took approximately 2 to 2 1/2 hours to put both together.  I recommend using a cordless drill as there are a lot of screws and cam bolts to tighten.  The shelves are very sturdy and shelving is nice and thick and a pretty white color.  I did notice a few marks on one of the boards but honestly can't say I didn't mark it when I was unpacking them and the marks are slight and really do not take away at all from the appearance.  So far very happy with these shelves.