Naruto.wikia.com is awesome! it has every character (including minor ones) a strength chart and everything!
Chat with our AI personalities
http://naruto.wikia.com/wiki/Demons here is the list of all the demons.
Now there is only two, and their names are Sasuke and Madara
The people like Naruto who have the nine-tailed fox inside them are called Jinchuriki
Sakura, and in the manga Tayuya.
July 23 according to the Naruto wiki. (Not wikipedia.) See attached link.