I also don't understand some of the things on ACR, they used to have what is called "The Cage Match" and I don't know what that is or how you enter it. I think the finalists were actually flown to Costa Rica to play together at a live table, but that is not something that interests me at all so I don't play those things. Especially nowadays, the last thing I want to be doing is flying out of the country with all the mask crap going on. They might not let me back in!!!
Their "steps" tournaments were called "Cyclones" for a while, but I don't think they run them anymore, or they might only run them when a big tournament is occurring. There is a "Steps" tab in the client, but currently it is entirely blank.
The big thing they are running is called "The Beast" which seems to be some kind of leaderboard thing, but I don't really understand what that is and really don't have much interest in it.
For me, I just play the regular, simple, standard tournaments and those are more than enough challenge. Just the time involved in regular ACR tournaments is insane, the few times I make a deep run it will go 10 or 11 or 12 hours pretty easily, especially in the 4-hour-long or even 5-hour-long late registration events... I know poker tournaments are a marathon and not a sprint, but it is truly a massive "grind" to win one of them, and it seems only the most patient of players ever gets there. I usually get tired and end up shoving in spots where I shouldn't be shoving, mainly because I'd rather just get to sleep than keep playing. LOL You really need to be a "night owl" to play on ACR, of course it depends what part of the world you live in, but for USA players like myself, the biggest tournaments don't begin until mid-afternoon and they can (and do) run all the way until the middle of the night or even early the next morning...
Good luck, it is without a doubt the best site we "free" Americans (sigh) can play on these days, and its not even close really. There's no bigger site with bigger tournaments, but if you're a sleepyhead like I am in my old age, its certainly not the easiest site in the world just due to the hours involved. Love big field tournaments, and ACR surely offers them... but they are looooooong.