Plan to study in university while having family reunification visa

Hei anyone. I was wondering if anyone here in the forum have experienced this? I am thinking taking a  masters degree. Since I have the family reunification visa already, I was wondering what is the proof of financing? There's an info that says a sign letter from sponsor. But does it also mean that the sponsor has to deposit the required amount on the school's bank account? wouldn't be hard to take a student loan on the bank here if you have no credit history (since you just moved here)?

Contact educational institution you want to study, they will explain for you.