"What is the fastest way to learn French?"
Translation:Wat is de snelste manier om Frans te leren?
When do we put a 'het' before the language we are talking about? I'm pretty sure I have seen that before.
Usually only when you want to say something like "in Dutch it's spelled like this" or "We say it like this in English." In Dutch you'd say "In het Nederlands spellen we het zo." Zo zeggen we dit in het Engels" etc.