Learning Delphi

Hi, I’m a third-year CS student and I received a proposition from the company I applied to — they offered me to learn Delphi and complete a project for them as a requirement (though I’m not sure what exactly yet) for my summer internship. Do you know any good (free) courses or books that introduce the language? I’m most interested in project-based courses, but I doubt something like that exists for Delphi.