The bookcase was pretty easy to assemble. I’m no expert at these things but I’ll say it took me about 45 mins to complete. Definitely use small power drill (vs Allen key) as that shaves off tons of time. Delivery came 2 days earlier than expected too so that was great. Haven’t had a chance to really place anything heavy on the shelves yet, so we’ll see how they hold up in the long run. Overall, pretty happy with the product.