episode 85
Naruto Shippuden episode 15
after you learn a thousand years of death from kakashi and/or beat the game, learn hurricane formation from kakashi (but its sasuke's move!!) then go to the forest of death, kakashi should be standing there, he will teach you young lightning
He will teach you the Fire Style: Fireball Jutsu.
Sometime during Season 1 - 3
Naruto meets Sai right after returning from his mission to save Gaara. In the manga that would be book 32.
naruto shippuuden episode 311
my way of explaining dis is short chidori u have to have a great amount of speed so it is strong if u just use it nd hit someone its rly minor on the other hand rasengan doesnt rly need speed u can just use it XD AND THE DAMAGE WILL BE EXTREMELY POWERFULIt depends who is using which technique, and how well that person knows how to use it.Hi Friends,First of all rank of both of the justsu is 'A'. Now as we know that rasengan is the ultimate form of the Shape manipulation without any Nature element chakra mixed, whareas chidori was developed by kakashi to overcome this limitation of rasengan by mixing his chakra with his light element chakra. But the important point that should be noted here i that chidori is not the uses the ultimate form of shape manipulation.Also as once jiraya told to naruto that he will teach him a technique that is more powerful than chidori. As it can been seen that rasengan is a technique that covers a larger area for destrution and also throws the victim far way if used properly and forcefully, while chidori covers only the area where it is hit. Thus if the purpose is of the direct killing of the enemy in one hit as that of the sword then chidori helps, but if the aim is for maximum destruction of most of the body parts then rasengan is very useful.Also in naruto series it has been shown that when sasuke and naruto fights on hospital's terrace then, rasengan does more damage to the water tank than chidori which makes sasuke feel jealous of naruto.Also one should take into consideration that chidori is complete, so if the complete form of rasengan is comapred with chidori i.e. Rasen Shuriken then there is no doubt that chidori is many times weaker than rasen shuriken. Also rasen shuriken has even more advantage over chidori as wind element is stronger than lightning.Also the rank of Rasen Shuriken is not known. It is greater than that of 'S' rank.Time to conclude - Rasengan is stronger than chidori in many ways.Enjoy Naruto Series
In the anime, it's a flashback in episode 161. Naruto teaching Konohamaru the rasengan was actually done off screen. In the flashback, Naruto is describing the rasengan to Konohamaru, who thinks he's about to teach him another sexy jutsu. Hope that helps.
In the manga, the toads go and get Naruto and they teach him senjutsu.
as guy sensai says - the lotus is a double edged sword - meaning it injures both the target and the user. kakashi taught sasuke the chidori for a few reasons 1. sasuke has lightning style chakra 2. and the sharingan meaning he can react to a counter attack 3. it wont injure him like the lotus does also in terms of a story telling point of view, having two main characters with the same jutsu would just be boring
You have to train or help different people to get their jutsus. Like Kakashi sensei if you keep helping people and getting their jutsus Kakashi will teach you fireball jutsu.
Jiraiya taught him