TASEL (pronounced TASS-Uhl, like tassel) stands for Totally Awesome Stack Execution Language.
TASEL is still in Beta phase. There's no one way to use it on a local machine, you just have to figure it out. Sorry.
Documentation is here: https://tasel-lang.readthedocs.io/en/latest/
Examples are here: https://tasel-lang.readthedocs.io/en/latest/examples.html