If you are Married filing jointly then these questions also apply to the spouse.
Deductions generally include mortgage interest, medical expenses, charitable donations, etc.
The Standard Deduction in generous and is used by most people (lowers taxes more than itemized deductions and simplifies tax filing).
The Standard Deduction varies by filing status:
Married Filing Joint: $11,600 | Qualifying Widow/Widower: $11,600 | Single: $5,800
Head of Household: $8,500 | Married Filing Separately: $5,800
PLUS ADD Dependent(s): up to $3,700. And if Blind or age 65 or older add $1,150