nope sorry bro :P
Yes, you can get them from the PSN.
You can Remote Play both the PS3 and the PS4 version, meaning the console is the one running the game, with the PSVita being used as the controller and the screen. But there is no actual PSVita version of the game.
It's PS2, PS3 and PSVita only.
Remote Play is where the PSVita is paired to a PS3 or PS4. The main console plays a game, and the PSVita acts as both controller and screen.
You need an active PS+ subscription to play online on a PS4. You do not need PS+ to play online on a PS3 or a PSVita, but some titles have an 'online pass' - it comes with retail editions and is sold seperately on digital versions. You need this pass to play online.
The PSVita is not region locked, a US PSVita can play an EU PSVita game as would be bought in the UK.
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
No PS3 only
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online