You’re is a contraction for you are.

For example: I think you’re (you are) going to love it.

Your is the possessive form of you, used as an attributive adjective…

For example: I like your idea.

OR

…the possessive form of you, used to indicate something belonging or relevant to oneself or another.

For example: The library is on your left.

Helpful Hint: A way to test the correct form to use, break down you’re into you are, and if it makes sense in the context of the sentence, go with you’re. And if it doesn’t, use your.

One last example: You’re (you are) going to enjoy your stay here.