You only need a PC or an internet-connected PSP, PSVita or PS3, with any of those you can make a PSN account, register any of those consoles, and purchase games (you'll need a source of funding for that, ie credit card or prepaid PSN card). You will of course need the consoles themselves to play the games.
a router or a modem
After you PS3 has an internet connection you need to register and join the Playstation network
Yes all you need is a psp
No because you need a router to connect to the playstation network
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.
You need an online connection and a PS3 for the Playstation Network
You need a PS3 with an internet connection to the Playstation Network and a Playstation Network account. You also need the LittleBigPlanet 2 game
yes to play on the PlayStation network you need to sign in That allows them to ban people who break the rules
Playstation Plus does not have anything to do with hacking on the PS3 and is a Playstation Network premium service
No, to redeem the Japanese PSN card you need to be signed into the Japanese PSN.
'The latest', always.
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