Namaste! Aap kaise hain?

That's Hindi!
It means Hi, How are you? Now besides that I can say "accha" - which means yes however it can mean more than just a general yes, it can also mean: good, oh, really?!?!, ah I see...etc etc...so I still get confused when I use it how someone knows what I'm trying to say exactly! hahahaha
I can also say:
no - nahi
cheese - paneer
spinach - mutter
lentils - dal
ok - thik hai
potato - aaloo

That's all I've got hahahaa!! I know that knowing how to say cheese, spinach, lentils and potato aren't the most useful words but I'm workin' on it!