There is a wealth of information relating to DMR and numerous bits of hardware available on the Internet – websites (such as this one), YouTube videos and on Facebook.
Facebook alone has numerous groups covering the networks, radios, hotspots and some of the software used. I understand that not everyone is into social media however it may be beneficial to join Facebook with the sole purpose of gathering information, asking questions and getting updates.
Norman M6NBP – http://hamradio.joomla.com/
John K3NXU – http://www.miklor.com/DMR/
Radiosification – https://www.youtube.com/channel/UCt12Et6EkzzXwm0st9L2VjA
Chris 2E0UKH – https://www.youtube.com/channel/UC7p-0FTegAEJpn1c7J8YDug
Ringway Manchester – https://www.youtube.com/channel/UC67TJP9i84zbCi2h1aaSO6Q
Ham Radio 2.0 – https://www.youtube.com/channel/UCKpVMjRE0m60lKCBWhIlo0A
ID Database Tools – http://www.miklor.com/DMR/DMR-ID-DB.php
G4EML Tools for GB77, MD9600, MD380, RD5R & DM1801 – http://gb3gf.co.uk/downloads.html
Call Sign Prefixes – https://rsgb.org/main/operating/licensing-novs-visitors/international-prefixes/