Hold your finger down on their 'bubble', it will go into edit mode. From there you can access the delete button to delete the game and saved data. Games can also be deleted using Content Manager.
Yes, the PSVita has physical games, small cartridges called PSVita Game Cards. The PSVita has a slot at the top for them.
The PSVita is not region locked, a US PSVita can play an EU PSVita game as would be bought in the UK.
The PSVita does not use UMDs, your games either come on the new PSVita Game Cards, or are downloaded from the PSN.
You don't need to, PSVita games are downloaded straight from the PSN.
No, the PSVita is a much more advanced console. Games made for PSVita are not compatible with a PSP.
No, it takes its own PSVita game cards. It is not compatible with PSP UMDs, but an increasing number of PSP games are being made available on the PSVita's PSN store.
The Playstation TV is pretty much a screenless PSVita. It can play a selection of compatible PSVita games and has a slot to insert them, as well as certain PSVita games on the PSN.
You can't run unsigned code on a PSVita, that means you need to download games from the PSN.
There is an increasing selection of PSP games available to purchase and download from the PSVita's PSN.
The PSVita's graphical user interface, that series of scrolling screens with your games and apps, is what is meant by the LiveArea.
yes u can
Not not yet