Train llama3 on custom data locally

Hi,
I have setup the llama3 locally on my pc using Ollama, I have a file contains aet if laws, I want the llama to read the files so it answer questions according to the laws in it. Any ideas on how to do that ???

Building LLM-Powered Web Apps with Client-Side Technology See the blog post in the link for an example of retrieval-augmented generation (RAG).