Learn the guts of an OS (preferably *nix). Build an OS yourself in an OS class if your school offers it. You'll be surprised how important this knowledge will

Learn the guts of an OS (preferably *nix). Build an OS yourself in an OS class if your school offers it. You'll be surprised how important this knowledge will be in building/scaling web services. And, this skill set will be more valuable than just learning the same paradigms you already know in a new language.