"Now through September 30th, get a free AARP membership when you spend $15 or more on qualifying Walgreens branded health & wellness, beauty or personal care products.*"
The details are lacking, but the offer appears to work the same as previous years: the membership form (coupon) prints at the register after checkout. My friend purchased $15 worth of Walgreens vitamins and dental floss and the form printed. The form is the same as last year and existing members get a free one year membership extension.