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This chapter opens Part 2 of the book, and it will kickstart the hands-on sections. In this chapter, we will cover the following topics:
- Deep dive into LangChain and how to use it
- Calling open-source LLM API into code via Hugging Face Hub
- Managing prompt engineering
By the end of this chapter, you will have the technical foundations to start developing your LLM-powered applications using LangChain and open-source Hugging-Face models.