edit: I'm an idiot and you seem to have already looked into debate club stuff and you seem to be looking more recent written or online references? --- I'm gues

edit: I'm an idiot and you seem to have already looked into debate club stuff and you seem to be looking more recent written or online references? --- I'm guessing being able to express what you've learned permissively is the most important part of arguing effectively? In which case, for the US I'd probably look into ToastMasters (or maybe a debate club if your in a college area)