Sasuke knew his brother all of his life, but if you're talking about their reunions and subsequent fights, these occur from chapters 145 (around page 17) and 380-394.
The corresponding episodes are episodes 82-85. There are no Shippuden episodes yet that detail the last fight between Sasuke and Itachi.
Karin first meets Naruto in "Naruto Shippuden" during episode 165, titled "The Third Tsuchikage." In this episode, she is part of the Taka team, which is allied with Sasuke Uchiha. Their encounter occurs during the events leading up to the Fourth Great Ninja War.
Episode 234 or 230
Did you mean Karin? If so, then she did not appear anywhere expcept the manga.
Her anime debut was Naruto Shippuden episode 115: Zabuza's Blade.
Naruto Shippuden episode 246, The Orange Spark.
Naruto episode 216
They meet in episode 163. The episode is released now.
Actually, he does meet naruto in episode 12 and they battled in episode 14-15 or somewhere near that.
it is episode 168 :)
In episode 12 or 13 I'm not sure but it was around there sometime hope it helped =}
episode 58 its really naruto shippuuden episode 58!
Naruto summons Gamabunta at the very end of Naruto episode 56, but they introduce themselves to each other in episode 57