Loving our geometric bookcase! My husband and I both helped to put it together in a few different spurts throughout the day. Overall I would say it took us less than an hour even though the directions were a tad confusing. We did originally have the one of the long end pieces on the wrong side but we figured it out quickly. I recommend using a drill tp put this together! We love the way it turned out so much that we were hoping to get a second one for the other side of the couch. We realized they do not make an accompaniment for the opposite side, where the smaller shelf is on the left, to create symmetrical balance in the room, so we are sticking with just the one. It's for this reason and the slightly confusing directions that it is receiving 4 stars instead of 5. We are very happy with the piece.