Retrieval-augmented generation (RAG) systems are transforming AI by enabling large language models to access and integrate information from external vector databases without needing fine-tuning. This approach allows LLMs to deliver accurate, up-to-date responses by dynamically retrieving the latest data, reducing computational costs, and improving real-time decision-making. RAG systems can be particularly useful in the financial sector for advanced data retrieval and analysis, enabling companies like JPMorgan Chase to automate the analysis of financial documents and extract key insights crucial for investment decisions. However, dealing with non-machine-readable formats like scanned PDFs requires Optical Character Recognition (OCR) technology, which is essential for extracting vital financial data from documents like S-1 filings and K-1 forms. By leveraging OCR solutions such as Nanonets API, RAG systems can process all relevant data efficiently. The tutorial demonstrates how to build a financial RAG system using the Llama 3 model, transforming an S-1 financial document into word embeddings and generating accurate and contextually relevant responses to complex queries.