My biggest problem what I can't distinguish where is difference between "THAT" and "IT".
I see that sometimes people use "IT" instead of "THAT".
So... When can I use That instead of "IT"?
By the way, I didn't find information about That & It through the internet.
If I Made any mistakes please correct them :)
Do you mean, for instance, why do we say "It's raining" not "That's raining"?
Please give some examples.
I have corrected your original post. Please note that there was no need to put your final sentence in a huge font and in red.