User Portlet User Portlet

Hi! I'm new to wolfram products. May I ask about these codes. How would you use these? I've just started to learn Wolfram alpha how to use it. But I have no idea what one can do with this kind of code. Let say I would love an introduction!
Hi! My name is Pierre Lehtola and I just found out about wolfram alpha and I want to explore all the possibilities. I love to try out my most crazy ideas and see how they pan out