I would like to know the rulings regarding to hairs of men. Are they supposed to be shaven, grown or kept trimmed??

Also, please provide me with hadith, reference from Imam or Quranic Verse in favour of the same.

I’m in the Taqlid of Ayatolla Seestani….

Is clean shaving one’s head considered as Wahabism?

Shaving head is not consider wahabism, it is complete up to you but if u are keeping hair it's mustahab keep it tidy and clean