You link to communities like this: !wikipedia@lemmy.world
Plasma is the desktop environment developed by KDE. It’s for example desktop environment used by SteamOS 3.
As to how you learn this stuff: looking things up on the search engine of your choice helps. Not trying to be rude here, but you could have found all of that out yourself by searching for “plasma Linux”: https://lmddgtfy.net/?q=plasma linux
Also the arch wiki. There you can find all the info you could ever ask for.
" just use Linux" is a great piece of advice for most people because most people don’t care about the OS they use. They just use it. And they shouldn’t need to take a course to do so. Of course you are missing some things with this.
If you want more than you will need to go out and actively look for it
And a lot of others require a special app for 2fa. I for example still need a app when using the website.
I found that having a second phone (just my old phone) as a dedicated banking device. How often do you need to initiate a bank-transfer while on the go anyway?
The universeal blue family of operating systems also comes with Homebrew, the Linux port of the popular Mac package manager. The idea being that flatpak is for GUI apps and homebrew for the cli
There is BigBlueButton. It’s more focused in educational usecases (online classes and the like) but it works just fine for everything else. You need to host it yourself, but there are hosted instances out there. I for example use senfcall.
But I think we are talking about different things here. What Chanuk was talking about (I think) is a ms-teams or slack alternative, not a zoom or oracle WebEx alternative. Basically Discord but for business. Sidenote: there is a open source Discord clone called revolt