Which Sutta does Sakkra asks 14 Questions from the Buddha? In Maha Buddhavamsa The Great Chronicle of The Buddhas by Tipitakadhara Mingun Sayadaw, page 949 to 980, there is a series of question between the Buddha and Sakkra. This seems very relevant to the Buddhist meditation practice. Which Suttas does this conversation appear in?
Sakka-pañha Sutta: Sakka's Questions.

http://www.accesstoinsight.org/tipitaka/dn/dn.21.2x.than.html