Ok thanks ^^
From what I read from genki, 'naa' makes and exclimation of admiration, frustration, etc and usually used when talking to urself.
I found online that 'na' is sorta like 'ne'. And i also fond 'kana' is like 'i wonder if...."
Hmm...
Also, does anyone know any others? I've heard "sa" "zo" "ze" and i think "kai" or something liek that.
Thanks in advance~