Trying to figure out techniques for particle sourcing from the fractured geo in the scene uploaded here. I want to know some good techniques for getting better initial sourcing an collisions, any help is appreciated. Thanks.

Anything here would be helpful, I'm on a job, lol, the best way to learn right!

Whenever you are sourcing particulate debris, I'd suggest sourcing from the interior edges/faces of your shattered object. Then only source from primitives with a velocity over a certain value, to make sure you are emitting from the right shards. Source from either points or surfaces, but if you choose points, you may need to scatter points on the interior faces before you source, to get a nice, full sample to source from.