Start with ios
http://www.appcoda.com/ios-programming-course/
Tableview中插入一行：
http://blog.csdn.net/zhangkongzhongyun/article/details/7937062 在UITableView中动态的插入或删除行(或者节)
处理相机相片自动旋转问题
http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload（答案2）
http://blog.unieagle.net/2012/09/12/uiimagepickercontroller返回的图片可能是旋转的需要用imageorientation将其矫/
实现异步下载和显示互联网的图片，并对下载的图片进行缓存
http://code4app.com/ios/Web-Image/4fb5f0ff6803fac104000000
UIScrollview 横向滚动 http://unmi.cc/use-uiscrollview
camera zoom : http://blog.cnrainbird.com/index.php/2012/03/14/zhong_ding_yi_-uiimagepickercontroller/
下拉刷新 http://www.cnblogs.com/thefeelingofsimple/archive/2012/11/28/2793160.html
可以参考的思路：
http://www.slideshare.net/maximeguilbot/rails-as-ios-application-backend#btnNext
Push Notification: https://github.com/PRX/apn_on_rails
iOS 端 HTTP处理框架：https://github.com/RestKit/RestKit
https://github.com/AFNetworking/AFNetworking