Property Law: Registration of Sale Deeds ka Main Problem

Mujhe property law ke bare mein bahut tension aa raha hai... Exam 3 din mein hai aur abhi bhi registration of sale deeds ka ek cheez khatam nahin ho rahi. Kyaa karna hai, kya nahi... Registration ke baad sale deed ka mutation kahaan ho jaata hai? Main samajhta hoon ki sale deed ko registrar of assurances ya sub-registrar register karta hai, lekin mutation kahaan ho jaata hai? TPA mein kaha gaya hai ki sale deed se pehle ya baad mein mutation hota hai, lekin kahaan se hota hai ya kis taarikh se hota hai? Main samajhta hoon ki sale deed ko register karne ke baad sale deed ka ek photocopy vendor ko diya jaata hai, lekin phir kya hota hai?