How to install template in joomla? Where is it possible for free, without malicious links and in Russian?

Question

Joomla

Moreover, I have joomla downloaded on the hosting, do I need to add a folder with a theme to joomla through the file manager? And what is a quick start?

Answer 1

No, just adding a folder doesn't do it.
A quick start is when you have both cms and a ready-made template in one archive, and after installing this package you have a ready-made website without any extra modifications.