This shed was relatively easy to construct.  Directions were basically pictures and took some studying... but it went together well.  At times it was hard to tell the orientation for parts.  Some written instructions would be helpful.  I put at least three parts on backwards and had to make corrections.  Once it was anchored it was very solid.  I used concrete screws and anchored it to a slab.  It took about 16 hours total to construct.