the red one is a custom event, you use AddCustomEvent to create that. its like a function that can be called, but it doesn’t return any variables. GetMoveUp is an input Axis Event, and to find that, first you have to set up your inputs in your project settings. the other nodes are all variables you add to the blueprint, integers, array of vectors, and timer handles.
read through this introduction to Blueprint Variables, it will teach you how to create variables, set them, and get them.