Need help in deciding llm

I am completely new to this. I was planning to install a local LLM and have it read my study material so I can quickly ask for definitions,etc

I only really want to use it as an index and don't need it to solve any problems.
Which LLM should I try out first?

My current setup is :
CPU - i5-12450H
GPU - Nvidia RTX4050
Ram - 16GB