So overall I really like this new bookshelf.  I was able to put it together fairly easily and it took maybe 3 hours total.  I expect it will be much easier to put together the second one I bought.

the only thing that I did not like about the book shelf is that some of the interior boxes, pre-drilled holes, don't like up perfectly. So instead of perfect 90 degree corner, they are off by millimeters.  I know that once I put things on the shelf and it blends seamlessly with my decor, I won't notice the problem, but right now, while I inspect it minutely, I notice the small imperfections. 

I think the instructions could have been more explicit that you're supposed to glue the dowels.