序言Preface
The intent of this book is to introduce computer programming to a complete beginner.
这本书是向电脑初学者介绍计算机编程。
That said, it has been a long time since I learned many of these ideas myself. If something is unclear, or if you think I am explaining the obvious, please let me know so that I can fix the problem for the next reader.
换句话说，学习这些东西需要用很长的一段时间，如果有什么事情不明白的，或者你觉得我解释的太罗嗦了，请通知我修改这些错误以便后面的读者更好的阅读。
Also, as you read the book, keep this in mind:
如果你要读这本书，请认真记下这些：
You cannot learn to program by reading a book. You must write code. Lots of code.
你不能从书本上学好如何来进行编程，必须写程序来练习，非常非常多的程序。
So as you read, certainly try the examples, but if the book inspires an idea of your own, by all means work on that for a while. The book will be here. You can always come back and pick up where you were.
在你阅读的过程中，一定要试一下示例程序，但是如果书中鼓励你可以用自己的思维的话，那么就尽力去做吧。这本书就在这里，不管你在哪里随时都可以来阅读。
Play. Have fun. See what you can do. Then come back and read some more. It is the best way to learn.
尽情的玩耍吧，把你看到的付诸行动。然后再继续下面的部分。这是一个非常轻松的学习过程。