Teach how to use a nodejs API from the cryptocurrency broker https://www.bitget.com/en/ on Debian Linux

I've been using debian Linux for quite a long time but I don't understand anything about node.js. I need to learn how to send commands to submit buy / sell order, cancel order, balance etc via command line. I've already installed node on debian, and cloned the API package, but I don't know how to make it work; The job is to teach how to run the API commands in the cryptocurrency broker https://www.bitget.com/en in my linux debian server