（1）Where can you get the discount information?
（2）Do we need to carry a bag when we go shopping in North America?

    Customers can get information from advertisement. Nowadays advertisements are almost everywhere, newspapers, TVs, radios, etc. In the United States, there are two kinds of nationwidesales, the spring sale and summer sale. Besides, there is also the white sale, here you can find whatever you need for bedding.
    People have to decide where to buy and when to buy. The prices of the same goods are not same at different season in a year. Pay attention to the useful information like seasonal sale and discountads. These will save you a great deal of money. 
    In North American countries, every shopping mall, super market and grocery use package bags. So you don't need to carry a bag when you go shopping. And if you do take one, the shop assistants might doubt that you are a thief.