As promised Y

You - Your - You're

You - Meaning not me
Your- Shows ownership
You're - You are
Did you find the cat?
Is that your cat?
When you're going to the store will you look for the cat?
You may only use the word you're if it can be changed to you are.
By the way you is like deer, you can mean one or all.

Unless you are in the south then it becomes you'all. Which when pronounced sounds like ya'll rhyming with wall.