https://web.stanford.edu/class/cs224w/ https://www.cs.mcgill.ca/~wlh/grl_book/files/GRL_Book.pdf https://distill.pub/2021/gnn-intro/ https://arxiv.org/pdf/1812.08434 https://www.datacamp.com/tutorial/comprehensive-introduction-graph-neural-networks-gnns-tutorial