1. 6mths after you are out of school.
2. don't know, but 2-300 dollars/month initially, i guess depends on how much you borrowed, and the period of repay.
3. don;'t know, but u will get a statement where everything is caculated.
5. if you are borrow more than 10k per year, you only pay back around 7k.
more info, osap.com