The answers to tag questions in English are very simple; they usually consist of just "yes" or "no", (possibly followed by a few brief words), which should reflect the truth of the situation.
Here's a link to a website that has a useful explanation of how to answer tags:
do you know that site what was under the understanding bit yeah ?
I LOVED THAT SITE IT WAS PRETTY FUN AND COOL I JUST LOVED IT SO I HOPE YOU LIKE MY OPINION ABOUT YOUR SITE BECAUSE IT WAS JUST AWSOME I DONT EVEN KNOW HOW TO DISCRIBE IT BECAUSE IT WAS JUST AWSOME STUNNING WONDERFULL COOL FUN FANTASTIC SOME ONE MUST BE CLEVER SHOKING AND MY FAV WORD OVER WORLD,OVER HEAVEN AND OVER WORDED. AND if you wan to know my age my age is 11