elite tomes

If i buy an elite tome on my level 1 or what ever, and use it, can i unlock ANY elite skill?

You can unlock any elite that you have unlocked on your account!
(if you go to priest you can easily see what you have unlocked and not)

dose it count if i bought on my pvp character with balthazar points lol

You can not unlock any skill with an elite or normal tome for that matter.

What you have to do is "Unlock" the elite skill you are wanting with another character. Then when your level 1 character uses the elite tome it will be in the list. If you have not unlocked it with a character before hand then it will not show up in the list.

Krat

** edit Someone beat me to the other so, I will answer your new question

Yes if you unlock any skill with Balth faction it is then unlocked on your account.