PSN is free
the cards are for DLC
such as games or addons
Live is the name if the Xbox internet service, Playstation is the PSN or Playstation Network and it does not have a charge to sign up. Network Cards are never needed except for purchases you want to make. Even then they are not needed, you can just use a credit card to put Money in your Playstation Wallet
No, to redeem the Japanese PSN card you need to be signed into the Japanese PSN.
From your Playstation Network connection on a PS3 you only need money in your Playstation Wallet from a credit card matching your account or a Playstation Network Card to make a purchase and download it into your PS3 harddrive
You need a credit card to add money to your Playstation wallet and to join Playstation plus. You can also add money to the wallet with a Playstation network card you purchase at a retail store
Yes, you need a PlayStation Network account so you can go to the PlayStation Store and download it. The download is free, and a PlayStation Network account is free. You will not even need to input a credit card number.
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 PS3 does not have Live they have the free Playstation Network and for the cost of Live you can purchase Playstation Plus that provides members with free games and reduced download prices. You do not need to join Playstation Plus to play on the internet or use any of the Playstation Network features
PlayStation Network, Xbox Live Arcade,
an email and wifi or ethernet other wise its free
yes ,you have to have it or credit card. The Credit card is better because network cards are only sold in denominations but work well when you can not use a credit card
No you don't need it. That is the normal way to add money to your account or you can purchase the PlayStation network card and this is quoted about the card from related link: "The PlayStation®Network Card (PSN Card) is a prepaid card that may be used to apply funds to a PlayStation®Wallet without using a credit card. Please visit your local authorized PlayStation®retailer to purchase the PSN Card."
a router or a modem
After you PS3 has an internet connection you need to register and join the Playstation network