Loans How Exactly Do 'interest Only' Mortgage Loans Work? When Do I Pay On The Principle Of Such A Loan?

How exactly do 'interest only' mortgage loans work? When do I pay on the principle of such a loan? - loans

I am ready in April is a bad idea, but as an interest-free loan that works? Would it be extended for another 30 years to Note or the loan? Would I be able to receive a fixed interest-only loans?