Hare Krsna Devotees,
Srimad Bhagvtam best among Purans containing 18000 shlokas was first told by Bhagwan to Sri Brahmaji. Thereafter it was conveyed by Brahmaji to Sri Narad Muni who re-conveyed it to Krishn Dwepayan Vyasji. Sril Vyasji then conveyed it to Sril Shukdev Goswami.
Sril Shukdev Goswami told Srimad Bhagvtam as it is to Maharaj Parikshit in the assembly of all learned Rishis. Sril Sut Goswami was also present in that assembly who later told same Srimad Bhagvtam to Sril Shonak & other 88000 Rishis in the assembly at nemisharayan.
The Srimad Bhagvtam which we read contains discussions between Sril Shukdev Goswami and Maharaj Parikshit. It also contains discussions between Sril Sut Goswami and Sril Shonak at nemisharayan.
So, my quarry is whether original Srimad Bhagvtam consists of 18000 shloka or Srimad Bhagvtam which we read now ?. The original Srimad Bhagvtam was scripted by Sril Vyasji. My next quarry is who has written the present Srimad Bhagvtam which we read?.
The above queries are just for academic purpose only and I may please be excused for my basic ignorance.