Interesting read so far but can't see the images at work.
I'm looking at finally building my 3 - 4m wide by 6m long office outside and I'm currently researching everything to help make everything simple and fast when building.
Got so much to look up, from post holes to insulation, electrics.
Going for a slightly raised floor, wooden framed, insulated structure, metal insulated roof, and a marine plywood exterior as the initial build, then adding proper siding afterwards to make it look nice