The deduction from gross income (no itemizing required) for tuition and fees expired at the end of 2017. However, there is still some hope that it may be extended retroactively for 2018. And there is some talk that it will also be extended for 2019. If so, information will appear on jklasser.com.
A tax triggered if certain tax benefits reduce your regular income tax below the tax computed on Form 6251 for AMT purposes.