Somehow I got interested in Avatar, too.
The thing I didn't like at first was that the series was often labeled as anime, but of course it wasn't...
Like Spongebob, it took a while for me to notice the series and then to notice its coolness.
I just started watching Avatar this year
It's a pity and it sucks that I was not a fan since the beginning. Oh well, better late than never....
Now there is a pause until the last episodes from book 3 air and I haven't recorded all episodes yet.
Almost nothing from book 1, and missed two episodes in book 2 and the same with book 3.