I thought the first episode was…

Oh, okay. I thought something in the show itself hinted at it, but I was caught by surprise. I don't think I saw but one commercial for the series, and that one did not mention who his adversary was, or even that he'd had one. I got the feeling he was going to be imprisoned by the TVA, and forced to work off his sentence with a series of unrelated missions. Now, after watching the first episode, it seems he'll spend the season tracking another version of himself, which is much cooler.

What clues did you pick up on leading to the revelation?

Or maybe posting spoilers without a warning before most people had the chance to see it's stupid and self centered shit ...

I come to this board to read people's opinions, not for some jerk to spoil the action without a warning.

The problem is NOT the spoiler, the problem is the lack of a warning. Guess what: if i would have known the post would had been a huge spoiler I wouldn't had read this post.

There is always a middle ground and a way to not be self centered, and in this case is: WARNING.

Probably you don't signal when you take a corner with your car either and call the one that crashes into you because of that "self centered" as well ...

I thought the same, it was a setup episode and it did quite well setting up the TVA and the whole new Marvel timeline.
Loki came out looking good in the end. Too little in the way of sex scenes but it’s still early.