The "it's" or "its" dilemma
This may be the shortest article I'll ever post here, because it’s all a lot simpler than it seems.
It’s = it is / it has
The apostrophe always shows that a letter is missing; in this case the “i” of is or the "ha" of has.
Its = "belongs to it"
This is always the possessive form of the word, as in:
Her research √
His computer √
Its conclusion √
You would never write he'r research or hi’s computer – so why would you write it’s conclusion?
Finally, if you’re tempted to try out your’s, her's, our’s or their’s the same rule applies; you would never write the computer is hi’s, so you shouldn't write the hat is your's—or their's.
it's = a letter is missing
its = "belongs to it"
Do comment below if you have other suggestions for getting them right.