TeamViewer is a software to help remotely access another computer. It can also be used for file transfer between machines. The app is handy when you want someone to help you out with a task or set up something on your computer, e.g. you don’t know how to install or use an app, keep getting an error message when following a set of instructions but can’t figure out what you are doing wrong, etc.
One of the most popular general-purpose programming languages is Python. It’s easy enough to pick up even for absolute beginners and robust enough to be used by scientists working at the cutting edge of machine-learning exploration.