If you live in the U.S it should be at a bookstore or to be more specific, try Barns and Noble.
Yes, there are. Go to Avatar Wiki and search " Books".
avatar .com
adventure with a bit of sci-fi
at bordes book store
borders, barnes and nobles,
book
yes there is
uh bob the builder i think
Barnes & Noble's
Yes, Avatar is sadly over. There will be no more episodes or books, as said by the executive producers of this great show. There will be a live action movie sometime in late 2010, though. Avatar isn't officially OVER, but no more episodes or books are coming out.
they only cost $4.99 in the us
light novels are Japanese books, American franchises like Avatar and Ruby Gloom their books are more considered like influenced.