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
Try 4OD on the internet
"Rumours"
im not sure but you can find it in the list of episodes of glee in wikipedia
There is no episode of Glee where Rachel dies.
A Glee "ENCORE" episode generally means it is a repeated episode (being replayed due to popularity)
Season 2, episode 18, Born This Way
Season 1, Episode 12 (Mattress)
The Glee tribute episode is not actually a tribute to anyone.
Each episode, including commercials, runs for one hour.