Move documentation to better place

doc.zih.tu-dresden.de/docs/jobs_and_resources/barnard_test.md

@@ -60,9 +60,7 @@ below. In order to support the data life cycle management, the well-known
     All old filesystems will be shutdown by the end of 2023.
     To work with your data from Taurus you might have to move/copy them to the new storages.
 
-For this, we have four new [datamover nodes](/data_transfer/datamover) that have mounted all storages
-of the old Taurus and new Barnard system. Do not use the datamovers from Taurus, i.e., all data
-transfer need to be invoked from Barnard!
+    Please, carefully read the following documentation and instructions.
 
 ### Workspaces on Barnard
 
@@ -118,6 +116,11 @@ migrated to the new filesystems on Barnard. This migration comprises
     ([cf. content rules on generic names](../contrib/content_rules.md#data-privacy-and-generic-names)).
     **Please make sure to replace it with your personal login.**
 
+We have four new [datamover nodes](/data_transfer/datamover) that have mounted all storages
+of the old Taurus and new Barnard system. Do not use the datamovers from Taurus, i.e., all data
+transfer need to be invoked from Barnard! Thus, the very first step is to
+[login to Barnard](#login-to-barnard).
+
 ??? "Migration from Home Directory"
 
     Your personal (old) home directory at Taurus will not be automatically transferred to the new