Sakura's other self is referred to as 'Inner Sakura', in the English Manga
Touya does know the secrets of Sakura. If you watch the episodes of Sakura Cardcaptor, it will show you.
No, he in fact mentioned that he went "all the way" with Trudy to his childhood crush Sherry in the episode Mr. Monk And Little Monk.
im not sure what sakuras favorite color is but its probably red or pink. her favorite food is shiratama anmitsu and her hobby is playing trivia, memorization
Mostly in Episode 76 Assassin of the Moonlit Night, but I think there's a bit in episode 75, too. ^^ In episode 76 Assassin of the Moonlight and in episode 58 Hospital Besieged-The Evil Hand Revealed, he tells Shikamaru and Naruto a bit about his childhood. I think thats it.T.T
episode 43: sakuras tears
Episode 32
SPRING
red
Not an episode. just fun animation to match the music. That's the only clip of it there is.
It shows his childhood all through out the seasons.
Cherry blossom
it was very good he was on an episode of Zack and Cody
Cherry Blossom. Hence the pink hair.
Her strength.
The one incident in Jesus childhood was when he gets lost in the crowd and is found after three days in the temple.
Chie Nakamura, for more answers look at naruto.wikia.com