I put this together in about 3 hours by myself.  It is very sturdy, heavy, but there was a mislabeled shelf on the instructions, as well as a sticker that said "UP" with an arrow on the back board.  It was only after I had put most of the screws into the back that I realized the "UP" sticker was put on wrong!  I'm disappointed that that made it a lot harder and the holes didn't match up well.  This caused screws to poke through the front shelves and messed up the finish.  Pretty annoyed with that.