十分钟让你明白Objective-C的语法（和Java、C++的对比）
http://blog.csdn.net/totogo2010/article/details/7632384
iOS学习之sqlite的创建数据库,表,插入查看数据
http://blog.csdn.net/totogo2010/article/details/7702207
iOS SQLite3初试用
http://mobile.51cto.com/iphone-321932.htm
http://blog.csdn.net/studyrecord/article/details/6216053
http://www.sqlite.org/cintro.html
IOS Number
处理（int-->NSNumber,NSNumber-->nsinteger,string -->double,CGFloat --> dobule）
http://www.cnblogs.com/csj007523/archive/2012/07/16/2593269.html
NSMutableArray的用法
http://blog.163.com/fuxiaohui@126/blog/static/131745826201161875243344/
ios 中生成随机数
http://www.cnblogs.com/zeejun/archive/2012/07/22/2603329.html
http://blog.csdn.net/sillyboytao/article/details/7657271
IOS开源代码库
http://www.23code.com/
http://blog.csdn.net/wishfly/article/details/7385318
http://blog.csdn.net/wishfly/article/details/7385313
http://blog.csdn.net/wishfly/article/details/7385336
IOS Quartz 2D 学习
http://www.cnblogs.com/cokecoffe/archive/2012/08/14/2637285.html
http://blog.csdn.net/duxinfeng2010/article/details/8120960
http://blog.csdn.net/zhuiyi316/article/details/7818149
objective-c 关键字和概念
http://www.mysjtu.com/page/M0/S732/732551.html
http://v.youku.com/v_show/id_XMzgyNDc5MTIw.html
关于UIImage的一些知识
http://www.cnblogs.com/chivas/archive/2012/05/27/2520013.html
http://www.cnblogs.com/likwo/archive/2011/06/18/2084192.html
有关UIView、subview的几个基础知识点-IOS开发 （实例）
http://justcoding.iteye.com/blog/1455665
http://blog.csdn.net/yhawaii/article/details/7556739
Core Plot 的使用
http://wangjianlewo.blog.163.com/blog/static/176568051201232352132595/
【iPhone图表】使用corePlot实现柱图
http://hi.baidu.com/ljlkings/item/ad3cbe8c4742ecc9ee083d5e
http://blog.csdn.net/kmyhy/article/details/7819661#
如何使用Core Plot绘制直方图和折线图
http://longshuaili123.blog.163.com/blog/static/2979612620121283711875/
IOS基础：深入理解Objective-c中@class的含义
http://www.cnblogs.com/martin1009/archive/2012/06/24/2560218.html
AppDelegate详解
http://hi.baidu.com/feng20068123/item/eb9f641a828c4a707a5f256b