Basic API Help

Basic API Help

I've been learning Creator/Deluge for a few years. I don't have any other development experience, so I might just be in over my head right now, but...I think I've made a very basic API call from Creator to the music database Discogs.com. I can select an Artist name from a Creator Lookup/Dropdown, and get back a bunch of related data from Discogs in another Creator field like this (key and secret are placeholders in the url):
This is what the response looks like:

What would the next step be to parse out something specific from this data? Say I wanted to populate a dropdown w/ a list of albums by Nirvana...?
Here is a screenshot of Discogs' documentation:

Not sure this is helpful, but any guidance towards where I should go or look for more info on this would be appreciated - thanks!