I'm missing out on a lot?

Ok, so, I'm not that much of an Esports fan, or any sports, really. So I don't really tune in to watch because I like to play things down on a lower level so nothing's too, serious. However, I do realize you can learn a lot from E-Sports people. Anyways, I've heard a LOT of talk here on the boards about stuff going on and (as per usual) I'm out of the loop

So, do bring me up to speed with this stuff and other stuff important to note at Worlds:

So INTZ did something and it's a great game and it was an upset or something?

Something about Mata killing it as Alistar? And the game being awesome itself?

So Bjergsen should apparently regret something he said? He had an embarrassing loss? (why?)

People talking about how TSM is doing good this year? or will be good? or was doing good and still is?

I don't know much about these topics so if you could expand on them and other stuff you think I should know about this, feel free! I like to be in the know but I rarely am.

Thanks guys!