Notwithstanding a small manufacturing glitch (badly located hinges on one door jamb, which was promptly replaced to our satisfaction by ABSCO), my 60 yo girlfriend and I (72yo) had no problems assembling the panels and then assembling/ bolting down the shed on a concrete slab.  Finished product was sturdy, square, amply large for storage , work bench, garden gear and double doors were a definite advantage, not just for accessing and getting gear in and out but for light and (in hot, humid Cairns), getting some air circulating.  very happy with the shed and how foolproof the construction turned out to be.