Accepting interest money to pay off debts

I'm currently unemployed and had to close down my business and there isn't anyone else in my household working. I have debts too pay off apart from my usual monthly expenses. A family member has offered to give me interest money. Can I accept it and if so can I use it to pay off my immediate debts like my landlord for outstanding rental on the shop I had and one other individual and if there is money left over could I can use it to try and start a small business from home in order to try and earn an income (I don't know the amount of interest money).