Day 2 – Building the Foundation Before the Framework

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In the past, I often just jumped straight into things without thinking too much about the technical foundation.

It worked but only up to a certain point.

For my RAG Mastery Challenge, I’ve completely changed my approach:This time, I want to understand the theory from the very beginning, so I don’t run into traps later and so I can progress much faster thanks to a solid knowledge base.

In other words:No building the roof before laying the foundation.

So today was all about research:

– What exactly is RAG?

– What does Retrieval Augmented Generation really mean?

– Why is it important? What problems does it solve?

– How does it fit into modern AI workflows?

Many of you already know this deeply for me, the knowledge was only halfway complete.

So today I:

📌 watched several YouTube videos

📌 compared fundamental explanations

📌 sketched the core concepts

📌 and created my own NotebookLM learning notebook

And because I don’t want to learn just for myself but for all of us

I’m sharing the notebook here:

👉 My RAG Learning Notebook (NotebookLM)

https://notebooklm.google.com/notebook/ea1c87b2-0eda-43f8-a389-ba1f57e758ce

This is where I’m collecting all learning materials that will support me along the way:Videos, explanations, sources, examples, definitions, diagrams.

If you have anything to add please let me know!I’ll include everything so we can build a powerful shared RAG learning template.

Day 2 complete.The foundation is set — tomorrow we go deeper.

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