RxJs is a library for reactive programming using observables. In other words, it is a tool to help you to write code that reacts to changes in your environment. This tool allows you to compose asynchronous or callback-based code with no worries about the race conditions or deadlocks, since the library will take care of the synchronization for you.

RxJs helps you to write code that is a lot cleaner and easier to understand. 

The library provides a lot of operators to make your life easier, especially when dealing with asynchronous code.

With this browser extension, you will be able to add a symbol or operator on the fly for your code and start to work immediately.

You can use it to learn more about the different operators, by clicking on the Stackblitz link.

The project also provides examples to help you get to know each operator better.

Also, the extension provides examples to show you how to use the operator, by showing you how the code is composed to provide the desired behavior.

This extension is the best tool to get a clear idea of how the operators work.

And, if you want to work with other projects that use RxJs, it is possible to search and find the projects that use the operators.