Exchange at Hitotsubashi University next month

I'll be coming to Tokyo next month for my exchange semester and I would like to know how is life in Kunitachi, especially as an exchange student, and if there is someone who also was an exchange student at Hitotsubashi University or in Japan in general who can answer some of my questions <3

I'll try to be as short as possible:

1. Are the courses difficult? Do they require a lot of individual study after class?

2. Is it better to take an iPad or a pc or pen and paper to take notes?

3. Are there a lot of exchange students? Are the local students friendly with foreigners and is it bothering for them to speak English?

4. I don't see a lot of supermarkets nearby campus or the residence, how did you guys survive?

I hope I do not sound rude in any of my question, but I am from Italy and life in Tokyo seems totally different from mine, I just wish to be as prepared as possible 🙂

Thank you if you take time to reply to me!!