I joined the DMR world around April 2016 with the purchase of the CS750 radio. Here are some resources I have collected for Connect System Amateur Radio users:

• How to use the Connect Systems CS750 with DMR?
  https://brossmangizmos.wordpress.com/2016/04/24/how-to-use-the-connect-systems-cs750/
  
• Connect Systems Amateur Radio Fans Groups on Facebook:
  https://www.facebook.com/groups/276912582649980/
  
• And of course the company website: 
  http://www.connectsystems.com/amateur.html

Martin Brossman – KI4CFS