New player - What to do

Hi, I bought diablo 3 for switch and started playing the previous season, but I deleted my char by accident . So a bit of a unlucky / dumb.

So with the new season, what is the best thing to do.
As I understand I need to make a season char and need to complete all chapters to unlock the rifts.

But as I was reading the information about the new season, they were talking about shadow clones and a cube. Is that something I need to know or care about as a new player, or should I just play the game and then start doing the rifts?

I hope I explained my questions a bit clearly.

Thanx in advance. And sorry for any typo’s

The theme for Season 22 is a 4th Cube slot and Shadow Clones. The 4th slot can be any item power (although not the same as one of the first three) and the clones are powerful copies of your hero that are spawned when you click on a shrine / pylon, last for 60 seconds (or until your hero dies, whichever is first) and are highly effective at killing things, including GR guardians up to GR100+.

More info on the season and the clones…

https://eu.diablo3.com/en/blog/23548757/season-22-shades-of-the-nephalem-begins-november-20-11-6-2020

Oki, thanx for the info.