Coming from Aperture, very confused by file management

This is a bit of a cry for help. I'm trying to move from being a very long-time Aperture user to Capture One. I love Capture One's power in actually working on the images themselves, but I have to admit that no matter how much time I put into it, no matter how many documents and tutorials I read, the organization scheme totally baffles me. Has this been the experience of any other former Aperture users? Will this all magically make perfect sense once I look at it differently?

I think the biggest thing is that the meaning of libraries, catalogs, folders, sessions, groups, albums, and projects seems extremely weird. I really can't figure out when to use what and why. With Aperture it was very clear that folders were pure containers (and clicking them showed you everything contained within), projects were the "real" location of the photo, and albums contained references to photos in projects (and could be wherever you like).

In Capture One, I thought there was something similar going on. Groups act like folders in that they can contain anything (although clicking them shows you nothing, which is kind of odd). I thought projects were the same in both apps, but in Capture One you *must* add a photo to an album within a project. Okay then, I figured that albums must be the "real" location of the photo and projects were just a grouping convenience. But dragging an image between albums -- either within a project or between projects -- just makes a copy of it. And deleting a photo with either its project or album just removes it from its album, but it's still there -- not visible in *any* project or album -- only to be found in the massive unorganized catalog. So apparently the catalog is the "real" location, but why all these arbitrary limits on projects and albums? And why do I have to laboriously dig through my catalog if I actually want to delete something? Why can't I have some kind of container in my organization that has a singular location for my photo? Argh!

Another thing that I don't understand is that no matter what I do, I can't get more than one catalog to show up in the pull-down list at the top of my library. Whenever I create a new catalog, it just replaces the one I had and I have to manually open up the other one. Am I missing something? Does Capture One want me to use lots of catalogs, or generally just a very few, if more than one? I'm not sure how Capture One intends me to use catalogs at all, and I'm not even getting to "folders", the meaning of which within Capture One is completely beyond me.

Basically Aperture from day one felt like there was a clear correct way to use it, with enough flexibility to define one's own organization. With Capture One, I feel like I must be missing something because even very simple organization workflow tasks seem extremely difficult and counterintuitive. I really don't mean this post to just be a lengthy rant. I desperately am hoping that somebody can help point me in the right direction because I really want to love Capture One.