Panel removal + moisture barrier questions

Hi all,

Going to start sound deadening soon and had questions:

#1 Moisture barrier - I'm thinking it's there for a reason so I don' want to remove it (would like to put it back) - so how do you remove it without ripping it? It's really stuck to that black goop...

#2 Do you put deadening material on the door cover as well (the plastic trim that you remove)? Or just on the actual door itself?

#3 Ran into issues when trying to take apart my car - since I'm not too savvy on what to do... Wheel wells in the back - I couldn't figure out how to remove the pieces off - I saw there were 3 screws holding it in place - but I couldn't figure out how to get them off

#4 Floor carpets - how to remove? do you have to remove the seats to do that ? How do you remove the seats?

#5 Headliner - is this hard to take off? What's the process?

Thanks for any help!

 

it's very noisy imo. i drive luxury cars and there's a huge contrast with this car.