Some questions (possible spoilers)

[jeo2388]

I recently started a new FFX game and some things I still don't get..

1.) What was Auron doing on the bridge in Zanarkand, reaching out to Sin? It seems like he was almost calling him. I always wondered how Sin got into Dream Zanarkand.

(SPOILER)It's made obvious throughout the game that Auron knows Sin is Jecht, and in some way Jecht can communicate with Auron See; "Are you sure?" in the opening cinematic. As for the latter part Sin is part of the construct that houses Yu Yevon, which in turn summons Dream Zanarkand, so Sin being able to reach it is no big deal.

he was simply proposing a toast, saying, "alright, its time for another adventure,lets take him, here's to you my old friend"

this might sounds stupid but...

does Tidus and Auron knew each other? I mean early in the game TIdus called out Auron, as if he knew the warrior but later on after Luca Tidus asked Auron if he knew Jecht, so Tidus doesn't know that Auron is actually Jecht's friend?

when auron died, he was able to travel in the zanarkand where tidus lived, that was 10 years before tidus was transported to spira. he was simply looking out for him, fulfilling the promise that he made to his friend. tidus and auron knew each other for a long time, but back when he was a kid, auron didnt talk about tidus' father.