How to treat a deep wound from a glass or a nail entered my skin?

This type of injury is nothing to fool with.

Infections are the key to control, here.

If the wound is more than superfical, you need to see a doctor for antibiotics.

If I went to the doctor for every wound I got I would have to have my own room in the ER. If it's a minor wound (i.e. not swollen 2x the normal size or you can pull the skin up and see the insides of the area) you can 1st treat it with a cotton swab and rubbing alcohol, it's gonna hurt but that cleans it out. Until it seals shut either take a cotton ball of peroxide and saturate it and run it over the wound or just pour a small amount over it, let it fizz for a minute and wash off.

If it is bad I do agree that a doc should take a look at it. Or if you think it's not bad but still shows sign of infection after a few doses of peroxide may be more serious

if real bad i would go to the ER.

See a doctor. A deep wound may be quite dangerous, causing a deep infection that will not be easily treated with topical antibiotics (those applied to the skin.) Another issue is tetanus. Have you have a vaccination for it recently? If not, then SEE A DOCTOR.

In the case of a deep wound that bleeds heavily, you may have struck a vein or an artery. See a doctor. In this case, my advice to "see a doctor" is to call 911, or at least make your way to an emergency room, depending upon the severity of the wound.