brake drum removal

Is there a how to guide anywhere?

I had a quick go last time I had a wheel off, but wasnt sure if the centre comes off (the drums have been painted, so i can tell if its a removable dust cap or part of the drum) and I was sure if it was just a case of taping with a dead-blow till it breaks free, or if theres more to it than that?
It didnt seem to budge much with a few taps, but i wasnt giving it too much welly in case I was doing it wrong!

It is take wheel off having chocked the other wheels so the hand brake is off then pull drum off the hub I would guess like anything with a fair amount of mileage the drum will be lipped so a few levers and force it off then grind off the lip before refitting the last one I did at home I just used an angle grinder and kept off the main braking face.

yes I suspected they might be considerably lipped. so is the centre cap part of the drum itself then?

No it is the axle cap.

Slacken off handbrake cable in the centre console between the seats.

Drums have 2 x threaded hole in the front... send bolts in there and it pushes the drum off.