After a long time, I am back to blogging again. What should I write about? Since I last wrote, I have been teaching classes on python, AI, social networks. For python, I have started with py4e, and then moved on to cs50 from Harvard. py4e is great but is a bit shallow compared to cs50. cs50 also teaches terminal and vscode and code testing. I am now teaching AI using cs50 material. It is also great, although a bit distilled. For instance, for reinforcement learning it allocates quite little material.