THINGS I REEEEALLY WANT TO KNOW AFTER LISTENING TO 'SERIAL'

*possible spoilers* I binged listened to the whole thing. it was a good Friday.
  1. so WHAT ACTUALLY HAPPENED?!
  2. why is Jay (probably) lying? what's he tryna cover up?
  3. does Adnan REALLY not remember anything from that day?
  4. do they get the physical evidence found near Hae's body tested? what does it reveal?
  5. did that Ronald serial killer guy do it?
  6. if Adnan did do it, why? what made him 'snap'?
  7. who were the people in the van at Best Buy that Jay was so scared of?
  8. how has Adnan not had a retrial yet seeing as there was defs not enough evidence to convict him?
  9. WILL WE EVER FIND OUT THE TRUTH?