YOU SAID:
I don't yet know what this site is for
INTO JAPANESE
このサイトの目的はまだわかりません
BACK INTO ENGLISH
I still don't understand the purpose of this site
INTO JAPANESE
私はまだこのサイトの目的を理解していません
BACK INTO ENGLISH
I still don't understand the purpose of this site
You've done this before, haven't you.