Thank you very much for the response, but I already know about the free videos at Learning Exchange, and that you can just look up random tutorials on YouTube.
But like I mentioned in the OP, the PTC University (Learning Exchange) videos aren't organized in a way designed to teach beginners. I remember reading a post on another forum mentioning how the Learning Exchange videos are pretty good, but that they're organized horribly. And that's honestly been my experience while trying to find videos to teach myself. If you are an absolute beginner with Creo, it might be difficult to figure out which Learning Exchange videos you want to check out, and in which order to watch them in.
And I've already looked for some beginner tutorials on YouTube. This video, for example, does a better job of explaining the basics of Creo Parametric than any other video I've found thus far:
https://www.youtube.com/watch?v=Qug3t7k9hFw
Though, by the time I found the above video, I had already figured out how to do all of that through trial and error. But hopefully someone who stumbles upon this thread in the future looking for help finds the video helpful.
And like I've already said, I'm looking for some kind of written user manual, similar to the Creo Parametric Quick Reference Card, but more in depth. Does PTC offer any official Creo Parametric manuals?