Essentialy this document is a compilation of articles, tutorials and personal experience on learning React programming and specifically, RxSwift and RxCocoa.
One of the best things of Rx is that you can use the same core concepts on any technology that has an implementation of this paradigm. With this in mind, the first section has general knowledge of this paradigm, so it will be useful for any platform (Java, Swift, JavasCript, even C#).
After that, the content will shift more towards iOS and Swift, with advanced content to get the most of RxSwift and RxCocoa.