Hi! Sorry you were having trouble! The latest stable Prodigy installer currently supports Python 3.6, 3.7 and 3.8 but it looks like you're running 3.9. So this is likely the problem here. So you can either install Python 3.8, or use a tool like pyenv that lets you run multiple versions of Python.
We'll be adding wheels for 3.9 to the upcoming new version – we first had to wait for all our dependencies to support it before we could build a version of Prodigy for 3.9.
Once you're set up, you can start an annotation workflow, also called "recipe" from the command line. Different recipes have different commands and options.
The getting started guide might be a good place to start and it explains the most important concepts: Prodigy 101 – everything you need to know · Prodigy · An annotation tool for AI, Machine Learning & NLP