个人觉得比较好的学习路径

linux入门 http://www.92csz.com/study/linux/

icon下载   http://findicons.com

openfire 插件开发 http://blog.youkuaiyun.com/ares1201/article/details/7737872

iphone 电话截取 http://www.cnblogs.com/ydhliphonedev/archive/2011/10/24/2223242.html 或者 http://blog.youkuaiyun.com/slinloss/article/details/8722806

制作免费ipa   http://blog.youkuaiyun.com/sike2008/article/details/8438660

编写iOS framework   http://blog.youkuaiyun.com/fengsh998/article/details/8291965 或者 http://blog.youkuaiyun.com/fengsh998/article/details/8290687

shell 编程基础  http://wiki.ubuntu.org.cn/Shell编程基础

linux公社  http://www.linuxidc.com/topicnews.aspx?page=2&tid=13