GPT - Question my Documents Tool

I’m wanting to create a simple website that creates a lesson plan based on information it finds from a PDF. The idea is that I would load the PDFs in for each subject and the user would be able to select which subject they want a lesson plan for and it would generate one using the relevant subject’s PDF.

I know there’s a lot of open source projects available on GitHub that do exactly this, I just don’t have the knowledge to implement them onto a website.