这个是无线密码查看器，特别好用，只要连接无线，你就能看见密码是什么~-This is the wireless password viewer, is particularly useful, as long as the wireless connection, you can see what the password is ~

系统架构师教程，当年我在淘宝上买的，内含教程和大纲。-System Architect tutorial, when I bought on Taobao containing tutorial and outline.