Ricardo Pinheiro has published a series of really cool Zentyal HowTos at Mundo TI Brasil in Portuguese. These help you to configure Zentyal as a gateway, DC, add Windows 7 to the domain, use RSAT with Windows 8.1 and to manage users and groups. Check them out! Guia de instalação do Zentyal 3.4 Zentyal – Configurando um Gateway (DHCP, DNS, …
How To: Centralizing user/group management for Mac OSX with Zentyal
Shabangs explains in this tutorial how to use Zentyal’s directory services for storing and managing users/groups in a centralized database so users can log in to both Windows and Mac machines with the same password. Mac OSX 10.8 “Mountain Lion” is used in this example. Thank you Shabangs!