Training, Certification & Career

I want to obtain the ACMA certification. I want to get some material to study. I'm studying right now for the CWNA, and I have some experiencie working with some Cisco Wireless devices, but know I'm working a lot with Aruba Wireless, so I want to deep undestand the configuration of the devices, mobility controllers, and also clearpass.

I would suggest you attend MBC course anywhere near your region. CWNA is a good start to understand WiFi fundamentals, however it is vendor mutual guide. MBC course for sure will give you the required knowledge to configure and administrate Aruba WLAN networks.
For Clearpass i would suggest you start with CP-Essentials course. More details @http://www.arubanetworks.com/resources/certification/