Deductions & credits

Thank you. More questions. What amount do I enter for this form as it has self/spouse. Do I just enter my deductible under one of those?

2. I know I will need to mail my state return with the forms, but can I e-file the federal tax form?

3. How does this affect my taxes if I am already getting a refund?

4. Do I need to mail my state taxes every year and include form 5926 with it?

Thank you so much. The answers to these questions are not easy to find.