You can translate the Dokuwiki page, near the top left you can select your language and read the pages more comfortably.
Also on your Dokuwiki page, there should be an "Admin" link leading to the configuration settings.
The structure of your wiki can be as simple as you need, creating a page is as simple as searching for something then clicking on the "Create this page" link
And, you will have to read some of the documentation.
I hope this helps,