Frappe Tutorial Problem

I’m trying to do the tutorial, but got blocked on “DocType Naming and Linking” step. There is not such thing as “master” in Document Type, only Document, Setup, System and Other.
What am I supposed to do to get this type of Document ? Is this a problem for the continuation of the tutorial.
Sorry for this perhaps obvious problem, but I’m a beginner.

Ah the documentation is a bit old. In place of master, you can use ‘Setup’. Have you looked at the video tutorials? They are quite recent: YouTube