Your next step may be to determine which DMR network you intend to use. Brandmeister is a pretty common one and the one I use. There are others and there is some inter-connectivity between some of them. It's been a while but I think DMR-Marc and DMR+ are some other ones. Also, have you programmed a DMR radio in the past? They more complicated to program than an analog radio but once you understand the basics of what going on, it's just a "wash, rinse and repeat" type of thing.
This is my first step in the DMR world. Based on some readings, Brandmeister seems popular and flexible compared to other networks. I have never programmed a DMR radio in the past, so i have a lot of reading/learning to do. I bought the radio from Bridgecom, the package includes a membership to the BridgeCom University it should help me get started.
73
VA2FCS