What about a doc ?

[icemagno]

Where can I find instructions on how to use it?
I'm completely lost.

[kungfoo]

I would suggest to start by looking at this: https://en.wikipedia.org/wiki/Geohash
After that have a look at the tests of this library and most crucial methods should have ample javadoc comments.

Please let me know, if there is a more specific question that should be addressed with documentation.