Invoke a module foo using (module 'foo) or (module 'foo 'bar...). Additionally, there are some utility functions available in all modules,
and these are described in core functions.
Within a REPL, (help foo) will give brief documentation on the function foo.
Some functions have optional arguments denoted by [foo]. Some functions have keyword arguments denoted by :foo.
There are some examples of use in the examples directory.
Note: while beastie still has a version number less than 1.0, everything here should be regarded as more or less provisional.