YOU SAID:
Nice to know in Japanese though.
INTO JAPANESE
日本語で知っておいてよかったです。
BACK INTO ENGLISH
I'm glad I Japanese to know.
INTO JAPANESE
日本語を知ってよかったです。
BACK INTO ENGLISH
Japanese'm glad I found out.
INTO JAPANESE
日本人は知ってよかったです。
BACK INTO ENGLISH
It was good to know Japan people.
INTO JAPANESE
日本の人たちと知り合えてよかったです。
BACK INTO ENGLISH
It was nice to get to know the people of Japan.
INTO JAPANESE
日本の人々と知り合うことができてよかったです。
BACK INTO ENGLISH
It was nice to get to know the people of Japan.
That didn't even make that much sense in English.