If you've never connected your PS3 to the internet before, it may eventually pop up telling you that you need to perform a system update at some point. *You must perform this system update to do anything else, so don't tell it "no". *If you accidentally click "no" then just do whatever you were trying to do again and it'll bug you about updating again.
Next you need to sign up for a Playstation Network ID if you don't already have one. *It's free to do, and there's two ways that you can sign up for an account.
If it asks you for billing information, that's just if you want to buy stuff, but you don't have to put it in since the Naruto Ultimate Ninja Storm DLC is free.
If you created your PSNID on your PS3, then you're solid and ready to go. *You can find the Playstation Store icon in your PS3's main menu and then locate the Naruto: Ultimate Ninja Storm DLC.
If you created your PSNID on your computer, then you need to find the "Sign up for the Playstation Network" icon on your PS3 and then go to it. *Once you enter that, it'll ask you if you want to create a new account or if you want to use an existing account. *Since you created the PSNID on your computer, it already exists, you just need to use your existing login information (which is the e-mail address and password that you set up on the computer).
Once you've got that, you should be able to find the "Playstation Store" icon on your PS3 in the same spot that you found the "Sign up for the Playstation Network" area. *Enter the Playstation Store and on the left side you'll see a bunch of categories. *Go to
Addons > Disk Based Games > Naruto: Ultimate Ninja Storm
Then enter each of the storm packs that you want and click the "download button". *They'll go by really fast because they're just unlocker files - right after they get downloaded they'll install and that's all you have to do. *Go start up Naruto Ultimate Ninja Storm and you'll get a bunch of messages saying "HEY! YOU CAN NOW USE THIS SUPPORT CHARACTER!"
If you have a pre-order bonus download code, you can follow the instructions on the card to redeem it. *Basically, at the top right of the Playstation Store are three/four buttons - one to return to the playstation store's main screen (house icon), view all of the downloads which you have downloaded (down arrow), one to view your shopping cart if you want to purchase some DLC for other games (it's a shopping cart), and the last one is a pencil with some numbers to enter special download codes. *The last button I told you about is what you need to click on to redeem the pre-order bonus codes.
How do you get the First and Second Hokage on this game
They're downloadable content. *You have to download them from the Playstation Store. *Right now they are only pre-order bonuses, you'll have to wait at least another month before they become publically available to everyone.