If you are going in this direction, please consider working on AI safety and alignment problems. Things like interpretability and corrigibility are keys to creating systems we can understand and "steer". Both are necessary if we hope to be able to use AI successfully. Success means safely and effectively (actually does what you expect/want).
Some resources:
- https://80000hours.org/podcast/episodes/chris-olah-interpret...
- https://www.fast.ai/ (haven't used it, but heard good things)
- https://www.agisafetyfundamentals.com/ai-alignment-curriculu...