If you are burning unseasoned wood, that you cut in the summer and burn in the winter than you will have a problem. Make sure that your wood is dry and seasoned, cut and split at least 1 yr before you plan to burn.
Do not load up the stove and turn the draft down to keep the fire all day, this is ok at night, provided that you burn hot at some point during the day.
Clean your flue at least twice a season, once before you start burning and then mid season.
The smoke comming out of your flue should be clear light grey to clear light blue a heavy black or heavy thick grey means something is wrong with the way you are burning.