Fixed rates and adjustable rates are the most common types of mortgages. Over 90% of US mortgages are fixed rate loans. A second mortgage works the same as a first mortgage, allowing a borrower to take out a lump sum of money and then make monthly payments to pay it back. You can use the second mortgage to make repairs on your house, to consolidate your bills, or to help with the down payment on the first mortgage to avoid needing to pay PMI.
The programs vary in what they can offer. In some cases direct financial assistance may be provided to help you pay your mortgage for a short period of time. Payment plans or reduced monthly payments may be offered. However most of the government programs and non-profit organizations will help facilitate some form of loan modification to qualified homeowners. This will provide families time to get back on track by ideally lowering their monthly payment, reducing interest rates or waiving fees.