how to use Roon


I'm putting ripped cds and downloaded music into portable hard drives. Running hard drives into usb inputs on Oppo udp 205 for navigation. Digitally output from Oppo to Aesthetix Pandora dac spdif input and out directly to amp. (no preamp) Trying to use Roon to organize all of my music. I need help. Not sure how to do it??
bwos