Using Paypal you have several choices:
1. Send money from existing credit on your Paypal account (if any).
2 Send money from a credit card: the amount is drawn from your credit card and sent directly to the recipient's Paypal account.
3 Send money from a debit card/ bank account: the amount is sent directly to the recipient's Paypal account.
Please note that Paypal will probably charge you certain commissions when "uploading" money, so please check on their site for real information about their services.
Please be extra vigilant about possible fraud sites purporting to be the real Paypal site in order to harvest your information. Don't click on links to "paypal verification" emails as they are always "fishing".