Haram foods include pig-meat; any animals that have been slaughtered incorrectly; carnivorous animals; animals that contain ethanol, other toxins, dangerous foodstuffs, or blood; or animals that have been contaminated in some way, and so on.

He can shave his head, grow his hair long, wear it in plaits, wear it short but not in a high and tight  or mullet. He should keep it clean but not fuss over it. If it's long enough, when he makes sujud it should make sujud as well. He can put henna on it, but not black.