The Jenny Lind 3-in-1 crib is easy to assemble. Within this video, I assemble the DaVinci Jenny Lind 3-in-1 Convertible Crib by myself. It was easy for me to assemble, using only the included tool. Learning how to attach the mattress springs to the crib was a little confusing at first but then I discovered that the mattress springs can be attached at various heights. I opted to attach the mattress springs to to top position. This crib converts to a toddler bed and daybed, using an additional kit that you can find here.