in anime he only goes up to 4 tails in manga he goes up to 8 tails
yes he does
yes
Yes, after a while he gains control of the nine tails.
yes
He feels sympathy toward Naruto, and in a way, yes, and no, He doesn't want Naruto to suffer, but unfortunately, if 9-tails gets let out, 9 tails will kill every one.
Yes naruto does go five tails one time, i dont know what episode though. But in episode 437 naruto goes six tails!!! the highest hes gone so far is ALL NINE!!!!!!
Yes. when hinata is attacked by pein, naruto thinks she is dead and goes up to 6 tails in an instant. naruto keeps going to 9 tails, when he finds himself outside the gates of the kyuubi, and The 4th hokage appears, revealing to naruto that he had set it up so he appeared if naruto ever reached nine tails. he tells naruto he is his father.
Yes.
yes he learns from killer bee how to full use and control nine tails
yes he did but never showed episode yet but it will soon
yes he can get up to 3,994,555
Yes it will. Naruto Generations will start in the very beginning of Naruto and work its way up to Naruto Shippuden.