This video is just to lay the foundations for future videos really. Nothing exciting or ground breaking here, but it explains a lot of the fundamental AD/LDAP concepts you'll want to understand to make use of various utilities used in CTF machines. See pinned comment for timestamps.
AD Permissions Reporter: http://cjwdev.com/Software/ADPermissionsReporter/Download.html
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HTB: http://hackthebox.eu
Intro: 00:00
AD/LDAP/DS definition: 2:33
Installing AD: 4:02
Forests: 5:30
Global Catalog: 6:05
Domain functional levels: 6:48
Local account migration: 8:08
Viewing the contents of a domain: 8:58
FSMO roles: 11:06
Creating a new user: 12:51
Viewing user account properties: 13:29
Constructing distinguished names: 15:35
Computer accounts: 21:03
Groups: 24:17
SIDs and RIDs: 27:55
LDAP queries: 30:05
LDAP attributes: 34:07
Group policy: 35:39
AD permissions: 44:17