Hi Zach:
It's common for professional editors to take a two to five day intensive workshop from an Adobe authorized training center:
Adobe Partner Finder | Adobe Training & Certification
Of course, those are not self-paced, online courses.
Adobe provides some tutorials here:
Premiere Pro tutorials | Learn how to use Premiere Pro CC
Do you have access to Lynda.com? In Los Angeles, the entire Lynda training library can be accessed at no cost if you have a current library card. Something similar may be available in your area.
I'm sure others will post will resources that they've liked.
-Warren