I cant remember if I did standard deduction or itemized deductions on my 2015 taxes. Can someone help me or tell me where to look on my 2015 taxes please

Look at line 40 of your form 1040. This will tell you if you took a standard deduction or itemized deductions.The standard deduction amounts are listed in the left margin of the form. If the amount is greater than the standard deduction, you took itemized deductions instead.