My son and I just put this up a few weeks ago and I was surprised at how easy it went together.  We used a paver base under the flooring for more levelness.  It is also surprisingly roomy - I was able to put a 6' shelf unit inside and organize all of my outdoor tools.  Plenty of room for my utility wagon, lawnmower, weed eater and shovels and rakes.  The skylight feature is awesome!  It allows daylight to illuminate the inside so there is no need for any kind of lighting.  I absolutely love this shed!!!!