Next time please post this in the Sticky that we have made for paypal issues only. Thanks!
Anyways, it sounds like your account is either limited or it doesn't have a credit card/bank account linked to it. I'm not sure how familiar you are with paypal, but basically when you first create an account you usually have a $0 Spending limit. (depends on where you live. In canada you start out with a spending limit, but in the US it's zero)
To get rid of this spending limit you have to do one of three things. You can add a credit card, a bank account, or you can add a prepaid or virtual credit card. If your not old enough/don't own a credit card or bank account then your best option is to get a prepaid credit card. You can buy one of these at basically any convenience store, and afterwords you can enter it onto your paypal so that you can have a higher spending limit. (After lift the spending limit you can send cash to other users)
Hope this helps!