As an editor, it is very frustrating to continually see the misuse of “you” words. PLEASE learn the difference or risk losing the attention of an editor/agent/publisher.
Your - the second person possessive adjective – it refers to ownership. It will always be followed with a noun.
Your manuscript could use some editing.
Will you finish your project today?
Are you writing for your age group?
You’re - a contraction for “you” and “are”.
You’re going to miss the last deadline.
You’re going to be a published author.
Yours - the second person possessive pronoun - it replaces "your" + noun.
Is this yours or theirs?
I can't find mine, but yours is on the table.
Yours is a better idea.
Your’s - may be written by many, but it is incorrect. I suppose this comes from the fact in most other words, 's indicates possession, so English speakers sometimes think yours should be spelled your's. They are wrong. Yours should never have an apostrophe.