All DVCS systems involve creating and editing a series of changes to a directory tree, including metadata about each change. Those changes and their metadata are basically just a shared document that you're collaborating on with other people.
On other words, the revision history is a document that you're trying to edit. Git's document format it a bit like HTML: you can edit it blindly using a WYSIWYG editor, but it's going to seem confusing unless you at least understand concepts like elements, attributes, and entities, and maybe some CSS. Those concepts map directly to the HTML wire format, so in practice, you'll end up learning that, too.
Mercurial and bzr (I can't speak about fossil and veracity, since I haven't used them) are more like Flash or MS Word: They're easier to use for beginners, but they're more fragile and their internal formats are more obscure.