Think of it this way - you just need to build a box. Four sides, top, bottom. You can DO that, really!
If you use plywood as the walls/floor/roof of the coop, and screw it into 2x3s or 2x4s where you want the pieces of plywood to meet, there is not really all that much that can go wrong. You may have to add a piece here or there to retrofit a bit more stability but really it WILL WORK
Have fun,
Pat

If you use plywood as the walls/floor/roof of the coop, and screw it into 2x3s or 2x4s where you want the pieces of plywood to meet, there is not really all that much that can go wrong. You may have to add a piece here or there to retrofit a bit more stability but really it WILL WORK

Have fun,
Pat