I've dabbled in programming for years, know some C, C++, Basic, python.. If I wanted to start to make a real useful program I'd like to start with one to config

I've dabbled in programming for years, know some C, C++, Basic, python.. If I wanted to start to make a real useful program I'd like to start with one to configure Windows settings to my liking.. Auto login, turn off ads, net reset. Anyone have suggestions on how to start? outside of a folder of Powershell scripts?