They write the episode before they film it and they try to make it suspenseful so they can pull in the ratings. Did that answer your question?
You can find that episode of Glee on Netflix.
It's the episode called "Sectionals" where the Glee Club goes to sectionals!
There is no episode on Glee that is named "You Do". However, there is an episode on Glee that is "I Do". S04E14
im not sure but you can find it in the list of episodes of glee in wikipedia
Try 4OD on the internet
"Rumours"
There is no episode of Glee where Rachel dies.
Season 1, Episode 12 (Mattress)
Season 2, episode 18, Born This Way
A Glee "ENCORE" episode generally means it is a repeated episode (being replayed due to popularity)
The Glee tribute episode is not actually a tribute to anyone.
Don't worry Glee fans! Just go to Ten.com.au/glee and you will find all episodes, also you may want to go on gleethemusic.com Just try them!