Step 1: How to begin.... What you need
You need basic tools for carpentry and wood working, manual or powertools. This bed can be made using only a saw, a screw driver and a steady hand for straight cutting, you also need 3/4" or 1" x 6" x 10' boards and a pole 6" diameter. (How many boards you need or how long the pole, depends on how tall you want your bed to be. (standard height of a bed is about 2 feet) and the size of your mattress so you will have to do those calculations yourself..).
1" board will make a stronger more sturdy bed so I recomend those. You will also need about 20 screws, and 3 or 4 hours of your time.
To make the fire finish you will also need a plumber's torch or any other gas torch but of course this is optional.
ONE MORE THING... REMEMBER TO TAKE ALL SAFETY PRECAUTIONS DURING WOOD WORKING