Hey
congratulations ! I am sure that will be a great experience !
I have never been to Beppu so I can't give you advice/opinion about that, but concerning Japanese life you can check out our website :
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Information about schools and Japanese life for foreign students/JPNAVI - JPNAVI Study abroad in Japan
This is the English version so don't hesitate to have a look !
Our main goal is to help students who want to study in Japan, but we also give information about life in Japan, etc.
And you can ask directly your questions to one of our advisers (for free!).
I hope I could help you, in any case have a good year in Japan