PyTorch: https://pytorch.org/docs/stable/index.html

Tensorflow (not officially supported through TAs): https://www.tensorflow.org/api_docs/python/tf

Numpy: https://docs.scipy.org/doc/numpy/reference/

Did you google it?: https://www.google.com/

Google Colab (officially supported): https://colab.research.google.com

Personal NVIDIA GPUs: Read the installation manuals for your OS and software package