This is a great resource, especially because of its killer feature: user provided examples.

Some of the more powerful or special purpose utilities in Clojure are much easier to grasp by looking at some examples.

The only thing that is potentially better is a very well maintained wiki, like the MDN docs. But that’s a much bigger effort and only few wikis reach that level of quality.

Another cool thing about Clojure is that its core library and other parts of the language are quite small and understandable. I had quite a bit of fun reading and skimming the source, trying to understand things etc.