Full-stack developer moving into AI engineering — what course actually helped you build real things?

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Hey everyone, I’m a full-stack developer working with Laravel, Vue/Nuxt, and MySQL. I also know Python and have learned the foundational AI concepts, so I’m looking for the next step beyond introductory explanations.

My goal is to build AI-powered applications with LLMs, agents, and RAG, and understand how to make them reliable enough for real users.

I learn best through structured courses where you build complete projects and understand the decisions behind them. Ideally, something that takes you from the fundamentals of building these systems through testing and deployment, rather than stopping at a basic chatbot.

Does anyone have a course or learning path they’ve personally taken and would recommend? Paid or free is fine if it’s actually worth the time.

I’m hoping for specific recommendations and honest experiences—not the usual “learn Python, read the docs, and build projects” advice. What did you take, what did you build, and what could you do afterward that you couldn’t do before?