Just taking my first tentative steps, but I do hope to find and decode DMR, NXDN, and P25 signals in my region. I can hear signals from the Greater Vancouver area where I live, so it should be interesting.
I'll have to wrap my head around a lot of new concepts, but I'm retired now, so I have a lot of time on my hands.

Thanks to everyone for the answers. I'll now try to learn as much as I can.