Yes VIM Editor is renowned for its flexibility and power but it does not follow any of the current conventions even for cut-and-paste, or scrolling around, or exiting. So most people, like me, who start it up to test it out, have to do an Internet search to figure out how to exit it. Just remember :h for help and :wq for save and exit.
The article below scratches the surface in terms of the very basics. It does give some idea though that if you use a number of steps regularly, there is a lot of power in using VIM.
You either love VIM or you hate it
See How to use VIM Editor - Anto ./ Online
This post shows you how to use VIM in a practical way, provides many examples and it also has a handy VIM cheatsheet.