Mr Kenny

Hi,
I am visiting Japan come Oct. I am suppose to purchase the JR East Pass for ny travel in the Tohoku Region from Tokyo.

My question is does this JR East Pass be use for when I reach Japan Narita Airport, can it be use on the Narita Express train to Tokyo.

Also what type of train to connect for my final destination for that day at Ueno Station.

Do I need to do reservation for both the Narita Express n whatever the train or Shinkansen train from Tokyo Station to Ueno Station.?

Can the JR East Pass be used for any train to travel from Ueno station to Shinjuku Sation.?

Thank you.