Questions from a noobie (actually, question from a paranoid)

I have verified my paypal account using my maybank debit card. Under my profile, I see it is now linked to my account.

So my question would be:
1) If I make payments for a purchase, does it now automatically deduct from my bank acc. via my debit card, even though my paypal fund balance is 0?
2) Do I need additional steps for international payments? (I am not sure if my card is opened for international transactions, but I managed to link my paypal acc with it, and they subtracted USD1 for the pre-auth thingy)

Thanks in advance!