Lesson number: 1
Comparison of "your" and "you're"
Incorrect usage of "your", example:
"Your an idiot"

Correct usage of "your", example:
"Your stats are impressive"
Incorrect usage of "you're", example:
"Can I borrow you're car?"
Correct usage of "you're", example:
"You're an idiot"
Lesson number: 2
Comparison of "there" and "their"
Incorrect usage of "there", example:
"There a bunch of fags"
Correct usage of "there", example:
"Look at those fags standing over there"
Incorrect usage of "their", example:
"I went their on vacation"
Correct usage of "their", example:
"I stole their money"
Lesson number: 2
Comparison of "then" and "than"
Incorrect usage of "then", example:
"The new version is better then the old version"
Correct usage of "then", example:
"I went shopping, then I went to the cinema"
Incorrect usage of "than", example:
"If you hit me, than I'll hit you back"
Correct usage of "than", example:
"The first chick has bigger tits than the second chick"
If English is your primary language, at least learn to spell properly, you motherfuckers. Otherwise...
"If your an idiot, than go stand over their!"