Designed and implemented a robust pipeline for processing and extracting textual data from PDF books, ensuring compatibility with a wide range of book formats and genres. Developed and fine-tuned machine learning models based on state-of-the-art NLP architectures, such as transformer models, to understand and contextualize textual information from books effectively. Combining Langchain with LLM enriches language applications with advanced functionalities, seamlessly integrating natural language understanding and generation for diverse use cases.