To quickly understand what is FinRL and how it works, you can go through the notebook FinRL_StockTrading_NeurIPS_2018.ipynb
This is how we use Deep Reinforcement Learning for Stock Trading from scratch.
Run the code step by step at Google Colab.
The notebook and the following result is based on our paper Practical deep reinforcement learning approach for stock trading Xiong, Zhuoran, Xiao-Yang Liu, Shan Zhong, Hongyang Yang, and Anwar Walid. “Practical deep reinforcement learning approach for stock trading.” arXiv preprint arXiv:1811.07522 (2018).