Yes, the PSP 3000 has a PSN icon on the XMB. From there it can access the PSN, to purchase and download games.
There's no other way, they need to come from the PlayStation Store.
yes there is a playststion store on the 3000 and also the 2000, and the pspgo
There are many games, including retail ones available on the PSVita's PSN store, but the games also come as physical media too, PSVita Game Cards.
The PSN is an online service, not a self-contained program that can be run from the PSP, if that's what was meant by 'built-in'. The PSP-3000 has a PSN icon that lets you connect to the PSN and view the online content.
Yes, the PSP 3000 can connect to the PSN, to purchase and download games.
You can access the PlayStation Network from the PSP's menu bar. Here you can purchase games and download them to play.
You download games, themes, pics, and other cool stuff you don't buy them in a store.
no
Yes, all PSPs can access the PlayStation Network.
Psp Go's don't take umd discs like other psp's take, (psp 1000, 2000, or 3000). Psp Go's only take digital games, which you can download on the PlayStation Store via internet
Yes you can, you can access it from the menu bar.
The game is a download that you have to make at the Playstation Store