It's too leggy. Put it in a bigger pot and trim it back a little. Give it as much sun as possible. Wait 'till the pod gets red and wrinkly, and, with gloves on, slit it in half, scrape out the seeds and separate them from any other material. Put them on a paper plate and put them on top of a shelf or the refrigerator for three weeks, then bag'em.

Ok, thanks. I understand almost all you said (English is not my native language).

just 2 things : you mean that I have to put the seeds in the fridge ? It is too cold I thing...

And what "bag'em" does it means ?

Sorry about that.

Just put the cleaned seeds on the paper plate and put on a high shelf or the top of the refrigerator, or any warm dry place.

After they have dried for the three weeks, put in a plastic bag and store in a dark cool place until ready to use.

Be sure and use gloves when de-seeding as a Bhut can seriously bite you.

Actually, your English is quite good.

Thanks a lot, tom226.
On more think : when I will pinch the plant, what I should be aware of ?
For instance, from than stem 9which become a little bit woody), is it possible to appear ramifications and sprouts ?

Side shoots should develop on the woody stem after you pinch out the top of the plant.

Ok, thanks.

See where the pod is? Go to the next set of leaves above it, and cut it just above the leaves. It will sprout from those. Try to get the branches close to the same length.

If you can lower a light source to immediately above the plant that can help with keeping it compact and fruiting as well.

Thanks guys.
One more thing...
How much sunlight it is necessary for the peppers to become mature ? Should I put the plant outside, directly in the sun (for about 3-4 hours every day it will stay dirrectly in the sunlight) , even if the temperature will be around 35-40 Celsius (95-105 Farenheit), or should I let it indoor (1-2 hour of sunlight a day), where there is not so much light, but also there is not so hot ?

Furthermore, if I put it in an indoor place where there is no dirrectly sunligh (but still there is natural light), the peppers will not became mature (red) ?

Thanks guys.

In my experience, Bhuts need about 4 hours of sunlight daily for good pod maturity. I'm in Texas, so it is as hot here 95-105 Fahrenheit. I would suggest morning sun and afternoon shade with a larger pot to retain moisture in those conditions. Your 3-4 hours should be OK.

Indirect (dappled shade) sunlight will allow the pods to ripen as long as the air temperature remains above 75 degrees Fahrenheit.

Plant material is very adaptable as long as it has enough water, fertilizer, and sun.

In my home (indoor) in temperate Europe, there are around 80 Fahrenheit all day long, for the next 5 months, but there are no conditions for direct sunlight (still, natural light is available all over the day). I use a special fertilizer for peppers, 2 times in a months.
Is it enough for the peppers to become mature ?
Or should I try to get it outdoor ? The problem with outdoor conditions is that in the night the temperature is (not much) bellow 75 Fahrenheit, the direct sunlight is for about 3-4 hours, and sometimes there are windy conditions (not to mentions that the temperature in the middle of the day will be around 105 Fahrenheit)...

Is will be very difficult for me to change the position every day (during the day - outdoor, and during the night - indoor)..
What do you suggest ? Indoor there are more stable conditions (and no direct sunlight), outside there are a little bit shifty conditions...

With those kind of conditions, put it next to the sunniest window you can. Besides using artificial light, that's about all you can do...