For more teaching/training on your dual-pol radar data, there are many different online courses/videos to help decipher what you are looking at.

https://www.spc.noaa.gov/exper/spcousom/#dpra (Direct link to all video trainings/presentations from the Storm Prediction Center)

If you take out the #dpra you will see the full index of videos offered, and yes...you name it, they have a video training for it. The SPC does all training for severe weather analysis within the NOAA spectrum.