The most awkward assembly method I have seen so far, no screws or nails, you basically just need plastic mallet that is included. It takes a moment to study instructions as there is no descriptive step by step, only tiny pictures. Once you figure out how it all comes together, it’s pretty easy and goes quickly. Construction is not too sturdy and shelves are thin, so I would avoid storing anything heavy. Shelves are not attached to the construction, which is pretty wierd, but they are not moving. Good fit for me as I will use it to store extra clothes in a closet.