Those veteran shoppers can tell you first-hand that you can save some money from shopping online. For those who have not yet tried shopping online, here are some tips and suggestions. First of all, it's good to know that most sites do not charge sales tax. That is a big saving. There are coupon sites online that offer 10% to 25% off on certain merchandise at well-known online retailers.  You can definitely take advantage of those coupon si...