Returning after an year or so

Hi guys,
Dunno whats the state of everything and where to begin, some quick tips would be helpful.
Whats the state of the game atm?
Is Non ladder still somehow active?
Should i go patch to patch from march 2022 until now so that i advice myself on the changes?
US or EU are more active in the trade forums? Is there anyone out there at all :smiley:
Any other info that comes to mind would be helpful.
Thanks and have a nice day