The money in your PSN wallet is what Sony refers to as funds. You can't buy anything in the Playstation Store with cash, credit cards, or Paypal directly. You have to purchase credits for your PSN wallet using a credit card, Playstation Network card, or Paypal. This is referred to as "adding funds" to the wallet, or just "funding" the wallet. Then you can spend the money that is in your PSN wallet in the Playstation Store.
How Do I Put that Championship Picture That You Have?
That's the Playstation MVP icon. It is displayed automatically if you are a Playstation MVP, and not at all otherwise. It isn't something that you can select or buy.
I'm new to the PlayStation store and I don't know what funds are
funds 3rd person singular present, plural of fund