Open Source Document Management System | OpenKM

Is it possible to hide views like Categories, Metadata, Thesaurus etc.?
I do not need them and don't want users to ask too much questions about it.

Sorry for my English.
Thanks.

Yes you can hide unwanted options from Administration->Profiles. You have to uncheck options that are not required and assign that profile to your users. You can also create and set different profiles for different users. To assign profiles to users the go to Administrator-> Users and click on 'config' icon and select profile for the user.