Fairly easy to assemble, but one screw hole was not drilled deep enough so the screw would not go in all of the way on one branch. I didn't want to send it back, because of the pain of repackaging. Some branches also show some dimples from assembly by the manufacturer, so that was disappointing. This looks good in our son's playroom--a more whimsical alternative to a boring bookcase. Love the bright green. Overall I was content with this product, but not thrilled.