sell the mobile phone sim card
I have sold the mobile phone sim card for one month in 2007. From this practise, I learnt some things that is difficult to ger from the books. I did the job from 8:30am to 5:30pm in the summer, the weather was very hot. I promoted the sim card to the every passer-by. It let me learn how to talk with the customers and how to sell a product!! That was real an unforgettable experience.