Determine the size of shed that you require and find a place in your yard where it will be located.
Construct the floor of the shed first. Measure and cut lengths of 2x4 to construct a frame that is the same width and length of the shed.
Cover the floor with 3/2 inch plywood using a hammer and nails. Measure and cut the plywood first or use a circular saw to trim off any excess.
Construct the wall frames that will be used for each side of the shed. Place the studs in the frame 16 inches apart, just like a standard house frame. Measure and cut pieces of 2x4 to the correct length for each wall frame.
Measure and frame an opening in one wall frame, preferably on an end, for a door.
Secure the wall frames to the floor using framing nails. Make sure each wall frame is flush with the outside edge of the floor before nailing.
Construct 3 to 4 rafters to place on top of the wall frames for the roof. Measure and cut 2x4 pieces to the correct length and then use a miter saw to cut a 45 degree angle at the end of each board. Secure the 2x4 pieces together using a hammer and framing nails.
Place the rafter on top of front and back edge of the wall frames and secure them with framing nails. A third rafter will need to be placed in the center and secured to the wall frame as well.
Cover the roof with pieces of plywood. Measure the dimensions of the roof to determine how much plywood will be needed.
Cover the roof of the shed with tar paper and shingles, if needed.
Attach plywood to the wall frames by hammering nails into the studs.