"Do you come here often?"
Translation:Käytkö sinä täällä usein?
What is "tänne" and "tulet"? It's not covered in this course, and although I can see that's what Google translate gived you for this sentence, I have no idea when this words should actually be used of the difference between those and "täällä" (I'm guessing "käyt" is more visit and not "going"/"coming" somewhere)
Tänne means here in the sense of movement (something comes here).
Täällä means here in a locational sense (something is here).
Tulet is just 2nd person singular for tulla (you come).
Käytkö sinä täällä usein? can be used in a neutral way to inquire if someone visits some place often, be it a park or a gym or a restaurant or whatever. But it's also a cliché pick-up line in a bar, like the English equivalent here.