可汗学院
http://open.163.com/khan/

编程范式
http://v.163.com/special/opencourse/paradigms.html

抽象编程
http://v.163.com/special/opencourse/abstractions.html

算法导论
http://v.163.com/special/opencourse/algorithms.html

Android应用程序开发
http://v.163.com/special/opencourse/developingandroidapplications.html

电路和电子学
http://v.163.com/special/opencourse/circuits.html

电和磁
http://v.163.com/special/opencourse/electricity.html

经典力学
http://v.163.com/special/opencourse/classicalmechanics.html

振动与波
http://v.163.com/special/sp/vibrationsandwaves.html

Markdown语法说明
http://wowubuntu.com/markdown/

LaTeX简单教程
http://iori.sinaapp.com/17.html/comment-page-1?replytocom=2