Between you and me vs Between you and I
Between you and me, the phrase "between you and I" grates on my ears like nails on a chalkboard. I hear the wrong version about 3 times as often as I hear it said the right way, so let's get this straightened out once and for all.
What's the difference between hers and her's? Find out the amazingly easy way to know which one to use. 
Mistakes made with the English pronouns I and me have been increasing exponentially for years. The difference is actually very simple - let me explain it to you. 
What's the difference between ours and our's? 
What's the difference between theirs and their's? 
What's the difference between yours and your's? There's an incredibly simple way to avoid this potential mistake.