Home Assistant - NodeRed Webhooks Node Basics

Hi, I´m a beginner trying to set up my first flow using HA Webhooks Node in Node-Red. Searched here and used google but couldnt find a simple intro.

Would be great to get a simple step by step tutorial for make it run. In the Webhooks-Node settings i choose an ID, after deploying Node-Status says “Registered”. But whats the correct ip to trigger it? Tried 192.MY.IP:8123/webhookid but didnt receive any reaction in NodeRed. Please help me get in running.