### 🚀 Describe the improvement or the new tutorial I’d like to write a tutorial about TorchRL LLM post-training API including data formatting for RL, multi-turn conversation handling, tool usage etc @svekars what’s the policy on open-source models usage? Can I load and use a small model (0.5B) freely? ### Existing tutorials on this topic I don’t think there are any ### Additional context _No response_