Owning a PSN account doesn't cost any money, and there are many free things on the PSN that you can take advantage of.
Yes. PlayStation Network allows you to save your billing info (ie. a credit card) to your account, allowing you to buy games on the PlayStation Store on the PlayStation 3 and PlayStation Vita without the need for a prepaid card.
No. Not every game because their might be games available for Play Station Portable(PSP),PlayStation3(PS3),PlayStation Vita(PS Vita),and PlayStation 4(PS4)
Games and apps released for the PlayStation Vita are not compatible with the PlayStation Portable.
if you are asking if there any free games to download yes, go to the playstation store go to games then go to free to play some are for PS3 some are for ps vita
You need to have downloaded the games from the Playstation Store. The PSP UMDs do not have a slot in the Playstation Vita
I doubt 3G will be free on PlayStation Vita, however you can use WiFi on it free of charge (besides paying for the WiFi bill as you already do). No it is not free you need to have an ATT internet contract. The 3G model is $300 and the WiFi Model is $250 both still require purchase of internet service and the 3G is exclusive to ATT. The PlayStation Network (PSN) is free once connected
The Playstation TV is pretty much a screenless PSVita. It can play a selection of compatible PSVita games and has a slot to insert them, as well as certain PSVita games on the PSN.
The PSP games must be. The PS Vita games also are available without download
No, it does not.
You need to make a sub account (child) and a master account (parent or guardian )
No they are sold for some games on the Special Playstation Vita Memory Cards
Playstation store or buy a new ps3 version and get the vita version for free.