Hi there, I'm new in this forum and glad to be here.
Welcome to the forum. Make sure that you read the rules (
https://bitcointalk.org/index.php?topic=703657.0).
I want to ask you when there is airdrops giveaway tokens do I need to add the exact token in my wallet or givin my eth wallet is enough?
Yes and there are instructions from the token developers itself on how you would that, info's will come from them on how you would add their token to your MEW wallet.