so did you make an account yet?
if not,
the go to the paypal website
and sign up
they will ask for your credit/debit card info
then, transfer the money to the other person
(they are supposed to give you their email for paypal)
just go to paypal
and there should be a tab
that says 'send money' or something
type in their email
and send it :]
pretty much once the other person receives the money
they will ship out the product
hope that helps and hope your transaction goes well!