me and my 8 year old son put this together as a father son project and it took us around 7 hours...I could have done it much faster alone but he wanted to fasten all the bolts himself while I did the screws...but it was fun working together...first off the amount of screws and bolts on this thing is scary at first...and the instructions are literally just pictures...at first I wasn't sure if I could do it but I finally figured it out....about half way through my son noticed there were youtube videos on how to install it...but by then I already had it well in hand....he is around 80 pounds and fully assembled the swings and slide support him fine...but he is a bit big for it