Are you smoking meat or fish? I don't know much about smoking of meat, but I'd guess you slice it thickly, then hang it in the smoke.
For fish, fillet it, brine it in salt water with added sugar for a while. Then, take it out, and wash it until it is less salty (taste it to be sure). Then just hot smoke it until it is cooked, you don't want very hot smoke, just hot smoke, so it should take a couple of hours to cook and it'll look kinda brown on the outside. You could see if it breaks in half cleanly (flakes) to check if it is cooked. I just leave it a while.
Just smoke it until it is cooked.
Oh, and BTW, I love it when somebody takes an interest and asks questions.