You get an explanation of each command and its arguments, plus suggestions and completion, without the need for any plugin.
The basics of the vim tutorial still apply to kakoune.
Yes, this is one of its most underrated features.
Make sure you have to following line in your kakrc
```
set -add global autoinfo normal
```
This will give you an explanation on the various commands that you perform in the normal mode of the editor in a unobtrusive popup on your screen.
When you type commands e.g. `:w` you will get a popup again that explains the optional switches available when saving a file. In vi, you usually need to hunt down things in documentation. In kakoune, the documentation is displayed as you work in your usual workflow. This made things really easy for me.