This setup is awesome for growing kids, but putting it together is a bear.  The pieces come in four giant boxes, and half your time is spent looking for the next piece.  They do provide the contents of each box on a sheet of paper.  So the instructions say you need piece L4 and the you look at each content sheet to find L4.  Then dig through the right box.

They could just tell you in the instructions where to find the piece.