Generative AI use case development

Hi All, 

Are there any tutorials on how to use the Generative AI extensions for a RAG based QnA using openAi models? I want to use Altair AI studio to develop a prototype where I can use an input PDF document as input context for RAG and use OpenAi models to perform QnA on them. I need help with:

1. Understanding operators that can help with this. Typically I'd need a PDF text extraction block which parses it to the Vector store 

2. Any tutorials, documentation or connect with people who have tried this usecase or similar workflows using AI studio.

Regards

MTSSA