Although I don't know how many Japanese people here in italki and how many of them study German,

I'd like to share the following useful tools, today.

All of the above are my recommendations.

Do you have any others?

You can add both English and Japanese comments.

Also I would appreciate German tutors' recommendation.

コメントは英語でも日本語でも構いません。

また、ドイツ語講師からのコメントも歓迎です。

Thanks!