Remove all of the parts and pieces from the box. Typically, there will be a headboard, foot board, two side panels, two side rails, screws and bolts, as well as slats to hold the mattress in place or a springboard. Set all the pieces aside and look at the instruction booklet.
Attach the two side panels to the headboard using the appropriate screwdriver or Allen wrench.
Attach the foot board to the side panels using the appropriate screwdriver or Allen wrench. This will complete the bed frame.
Insert the springboard or panels used to hold the mattress into place; use the appropriate screws/bolts to hold it in place.
Attach the side rails to each side of the bed. These typically come up 10 to 12 inches along each side and cover about half the length of the side of the bed. These rails are used to help keep your child in bed at night but also allow him to get out of bed as he grows.
Place the mattress on top of the springboard or panels. Then place any sheets and bedding on the mattress for your child.