Thread: yet / not anymore

I really don't know why but I always had a very hard time trasnlating these two expressions in Russian and my dictionary doesn't helm me at all (well, it's total crap).
so how would you say :

I don't know yet
I don't know anymore

and I can't see "poka ne znayu" in my dictionary.
does the expression exist ?

thanks in advance for answers, everyone

Yes, it exists: click.
I don't know yet = Я ещё не знаю = Я пока не знаю
I don't know anymore = Я уже не знаю