Perform Pran Prathistha from a brahmin pandit in a Shiva temple & then wear it for first time.
Follow the vidhi (rituasl) and mantras according to scriptures when wearing rudraksh.
Buy and wear the bead at an auspicious occasion. Make sure there is no rahu kaal & yamghat kaal at time of buying a new mukhi Rudraksha bead/mala, at the time of doing its Pran Prathistha puja and at the time of wearing energised Rudraksha bead/mala for the first time.
Rudra-Abhishek puja can also be performed on your Rudraksha. It is the best and most powerful way of energising the Rudraskha.
Once done, if you remove the rudraksh and wear it again then om-namah-shivah minimum 3times or 11times.
Remove Rudraksha before engaging in sex, eating non-veg, drinking alcohol, &/or attend participate in some one's death funeral procession &/or when visiting the cemetery or cremation ground. After you come back from attending participating in some one's death funeral procession &/or visiting the cemetery or cremation ground, you should take bath at first and wash the head and forehead parts thoroughly and then wear rudraksh again.
Remove it before sex and wear it again after showers.
Touch your Rudraksha with clean hands only.
Do not show your Rudraksha to everyone as it is not a fashion accessory. It should be hidden well below your clothes.
In case you touch it dirty hands or when you are back from a funeral mistakenly, purity it with Ganga Jal and pray lord Shiva to forgive and touch it the image of lord Shiva or Shivling.
The 14 Mukhi Rudraksha is very special and needs special care & handling.
Rudraksh is worn on Poornima, Mondays, Shravan Mahas, Navratri, Shivaratri, Mahashivratri & eclipse.
Keep rudraksh at the place of worship and touch it daily with your forehead when reciting Om Namah Shivaya.
Always buy Rudraksha from your own money & not from other people's borrowed money.
Rudraksha beads or malas should not be exchanged or interchanged after you wear it.
Clean the rudraksh with a brush or piece of cloth once and then dispose it off. Use a new brush and cloth every time you clean the bead.
As rudraksh is lord Shiva himself, you will get as much benefit by wearing a rudraksh as the amount of respect you have for the rudraksh because rudraksh is lord Shiva himself.