One possible version:
Boys and girls,
What would you do if you were given much pocket money? How to use it is a big problem. Here is some advice.
First you can put it in a bank. This way, you can form the good habit of saving money, which will be helpful in your future life. Or you can buy some books with it to get your knowledge; it’s good for your study. You can also spend some of your pocket money on your favorite CDs, a football or basketball, stamps and so on; they can help you develop your interests. But please spend it playing computer games.
I think pocket money is quite useful if you make good use of it.
That’s all, thank you.