I have lived with woodburners for 30yrs, I now have a large open plan house (Manchester) with a Rayburn (on wood) at one end and an enclosed morso (woodburner) at the other. The interior house walls are painted white and I only repaint about every 7yrs.
Using a woodburner efficiently involves some experience and knowledge of fuel type, and dryness, when to open and close inlet flue and outlet flue, also humidity and dampness of atmosphere.
However everybody can learn over a period of a year or two.
Like Simon says (thats a good one) its important that the fire has adequate seals, but if you burn poor quality or unseasoned wood its also important to clean the chimmney at regular (3-4month) periods, it is also better to have a double skin(if its metal) chimney to avoid condensation running down. If its a brick chimney its also important to clean out debris from birds etc, and a turn in the chimney will prevent wind from blowing the outlet smoke back down.
Its possible to have a turn on top of the chimney that faces away from the prevailing winds, thus allowing dispersal of smoke and stopping the wind from creating a downblow. good luck to all.
Its not necessary to have gaps under doors etc to create a draught, there will be sufficient oxygen in any room (unless its absolute airtight).
Its important to close the doors of the stove on lighting and when refreshing with new wood, best only to open the doors after the fire has been lit about an hour, and then when you do that, the outlet(a device that controls how much smoke is allowed through the chimney) should be completely open.