Hi Eric,
YES! It is certainly still relevant!
I’d say it’s almost a must.
After that you can do the: https://cgcooki.com/courses/blender-mesh-modeling-bootcamp
That also has some valuable Topology information.
Topology is a very broad topic, learn as much as you can and practice a lot!
The good news is, you can watch ‘ancient’ (re-)topology tutorials and they will still be as relevant as they were when released.
