How long do you need to stay out in the sun to get a tan?

You can't exactly go out for 2 minutes and expect a tan. Also, you have to wear sunblock because even with it on you will STILL get tan. (Not saying you need spf 80, but 15 or 8 would be good for a tan...a few tans is not worth a battle against skin cancer).

Tanning depends on your skin type too. So its hard to say because if you have very light skin, you might get a little burnt and turn tan (but its not very dark or anything), or if you have the skin of my best friend, you tan very quickly and noticeably.

Like I said it depends on your skin type, but either way wear at least a little sunscreen.