their/there its/it's

[STUD]

any suggestion where to use what???

I always make mistake with these in my blog

any website where I can learn such stuff

I have ideas but my grammar is bad

[Joe]

their is used like my, your, his etc = belonging to them
This is their car. You can see their dog inside.

there is used like here = more distant than here
There is my house. Over there. The one with the blue door.
We went to London and stayed there for 3 days.

its is also used like my, your, his etc = belonging to it
Rolls-Royce is famous for its quality.
Rolls-Royce cars are famous for their quality.

it's = "it is"
I must go. It's late.

[Tukanja]

I think, in a shop after you have asked for a pair of coverings for your feet the salesman, bringing them to you will say,'There you are!'

[jfrick]

A very simple way to remember the it/it's rule is to break apart it's apart to it is or it has.
Example:
If it fits the sentence, it's correct!
If it fits the sentence, it is correct!
OR
Try changing the “its” in your sentence to “his” and if it doesn’t make sense, then go with “it’s.
Example:
The horse reared its body off of the ground.
The horse reared his body off of the ground.

[Tukanja]

If the horse's reared off the ground he must be flying now?