Do you like the convenience of online back-to-school shopping but hate the hefty shipping fees? Freeshipping.org lists more than 2,000 free shipping coupons and codes, along with a range of discount offers. Shoppers can search by brand or merchandise category and major retailers on the site include JC Penney, Target, Kohl’s, Sears, Best Buy and Old Navy. Offers change and new stores are added …