The minimum weight for smoking & curing is 2 kg. The octopus should be very fresh.
Remove and discard the head contents and the tooth. Leave the skin on. No need to wash the octopus or to add more salt. Apply thin layer of olive oil on the octopus.
Let it dry for 2- 3 days on a smoke (spread the tentacles). For next few days let it hang in a cold, dry, windy place & no direct sunlight.