REST resource for specified content type
I mean if let users post data to Content type, they can Post data to
  all of my content types and I didn't find any option to restrict to
  specified content type.


Doesn't /admin/people/permissions stop them?

Permission


Basic page: Create new content
Article:  Create new content



  and for some content type GET exists


Don't you have to create a views rest export first before data is available to GET?

You can restrict here by adding a filter of type to your view.