[nice to have] Add visual elements to navigate through site and track progress.

The new Beta docs has been a great upgrade. It would be nice if we add a roadmap for react. When a new user starts reading the articles for the first time he/she will see almost 30+ links (links in the content alone) in the first page that takes them to different parts of our site or other external site.

But could we do it more in a visual way?
Like the https://roadmap.sh/react but more interactive?

Why show the flow of articles in a visual way?
The user can easily track their progress and will know what they can expect as they read. Also it would be very useful for them to move one after another and find topics they came for without having to toggle the navigations or search.

https://github.com/reactjs/reactjs.org/issues/22

What I'm trying to say is we can actually make a "choose your own adventure" model (reference 1, reference 2) represented in a graph (Like interactive roadmap) that connects the articles in the site so that they can choose their own adventure. since we are currently adding more visualisations to the site it would be a nice to have feature.

What are your views on this?

Can we add one? or Would it be a overkill?

首先查看 Beta 文档的第一页，以及 roadmap.sh/react 中引用的内容和链接的示例，以了解所提议的可视化、交互式导航。该 issue 未指定文件或测试；要完成它，首先需要在实现之前就 roadmap 的范围、文章之间的关联以及交互设计达成一致。