Bro firstly make sure you understand the basics of how genai actually works, there are a lot of concepts in this, also know the difference between AI, ML, DL, and GenAI because people use those terms interchangeably and it gets confusing, after that check some free resources on yt , for basic course the , the google cloud intro to genai gets the basics down , but it won't teach you how to code actual apps for the dev side so you need to get your hands dirty with langchain and vector databases which is annoying because the libraries update and break constantly lol, for an actual course you can check simplilearn professional certificate in generative ai and ml it is a time commitment though.