How much do you actually get back as a deduction for education of 4000 and you only make 35000 a year?

Answer 1

That depends on whether you're eligible for the Hope Credit, or Lifetime Learning Credit, or neither, among other things.

For Hope Credit, up to $1650, for LL, up to $800. Those are credits, not deductions, so the come right off your tax dollar for dollar if you have that much tax liability - if your tax is less than the amount of the credit, it can reduce the tax to zero.