20210109拿出老机器2013MBP，照着教程开始。
免费课程
https://www.bilibili.com/video/BV1rb411C7eN
https://www.hackingwithswift.com/100/swiftui
付费课程
https://designcode.io/
https://sspai.com/series/147/list
https://www.raywenderlich.com/
https://juejin.cn/book/6844733819036155918
参考文章
https://developer.aliyun.com/article/706780
https://www.bmpi.dev/dev/zero-to-one/
学些路径：AppleTutorials-->hackingwithswift-->CS193P，然后是其它。
iOS 证书幕后原理
http://chuquan.me/2020/03/22/ios-certificate-principle/