Step 1: What you will need
4 sturdy posts, we used logs.
16 80lb bags of concrete.
2 16ft 2x6's.
11 8ft 2x6's.
52 8ft 2x4's.
36 4in 3/8 lag bolts with washers.
4 4ftx8ft sheets of plywood flooring.
8 4ftx8ft sheets of OSB for the walls.
Nails and wood screws, 3in-3.5in for framing and 1.5in-2.5in for securing plywood.
3 gallons of Paint or stain to provide some waterproofing.
Wood cutting saws, we used a compound miter saw, circular saw, and a reciprocating saw.
Drill and bits,
Ratchet and socket to drive in the lag bolts.
Hammer and pneumatic nail gun.