It's not that difficult!
rant> I am getting very hacked off with the spelling and grammar in this country. I'm convinced they just aren't bothering to teach them English at school any more. So, in our first lesson on how not to annoy me with your appalling language skills, this is a shout out to all those of you with an apostrophe aversion: You're = You are - "I can see you're not that good at spelling old chap." Your = Possessive form of 'you', i.e. it belongs to 'you' - "Is this your appallingly written advert?" Their = Possessive pronoun, means belonging to them - "Is this their small furry animal?" They're = They are - it is a contraction of two words - "They're over there.". There = Over there - "The house was over there.". Use 'there' when referring to a place. It's = It is or It has- "It's great sitting on the beach in the sun.", "It's been great seeing you....