If you have already installed Arden2ByteCode, you can test it by running the MLMs in this directory. Every MLM has instructions at the top, on how to execute it. In most cases this will be similar to this:
$ arden2bytecode -r hello_world.mlm
For more information, be sure to have a look at the Arden2ByteCode Wiki, especially the command-line reference.
For information regarding the SQL example in the subdirecory sql check the README.md included in that directory.