Assembly can be done by one person, but two people makes it easier. Don't drop any nuts or bolts in the grass. There are not spare parts in the kit. There is no text in the instructions, just pictures. 1. Assembling the side indicates that 2 bolt should be used, but there are 4 holes. Use the two in the center. The 2 end holes are shared with other panels that are attached later. 2. The image for the L-bracket placement is very confusing. I provided an image of where these brackets go. They are at the back at the bottom. 3. The axle fits between the two metal plate. Leave the bolts loose to get the axle installed. Leave them loose until the wheels are installed so the axle can be moved left and right a little. Once the wheels and cotter pins are installed, tighten the 8 bolts per the image I have attached. A 750 pound capacity seems.. optimistic.