Im very pleased with the over all design and ease of building the shed. I'd say my experience level is moderately good. I made some modification along the way in areas that could use a little more meat to strengthening the over all design. If you choose to do the same, I used 3in screws in the subfloor and walls. I also added some simpson brackets at stud junctions. In the corners of the walls some right angle brackets were places. The only item I wish I would of done is use 3/4 plywood in all areas that the 5/8 plywood was provided for. All in all though, its a nice shed and i'm very pleased with the over all design. Its been a fun project for me on the side. The instructions provided are detailed enough for success at any level I would believe. My shipment came with 2 windows that the instruction manual did not have anything mentioning them, but my recommendation is build them in along the way. I completed the shed, and now im going back to cut the wall. Guess either way works as you can freely place them where you want, accompaning your internal storage design. If you ask would I buy it again, yes.