The Microsoft Power Platform, specifically Power Virtual Agents are a great way to start working with AI when you're not a coder. Other parts of the Power Platform are being enhanced with AI integration.
If you are looking to expose insights from documents, then a great place to start is with the Q&A Maker... and then as your experience grows you may way to look at more advanced areas like the OpenAI Azure service.
Further reading;
Integrate Power Virtual Agents with Q&A Maker: https://video2.skills-academy.com/en-us/azure/cognitive-services/QnAMaker/tutorials/integrate-with-power-virtual-assistant-fallback-topic