> I must have only ever encountered it in "bookkeeper mode". That abstraction is likely what threw me off!

I personally find the bookkeeper mode very confusing, and having observed others (non-accountants) using it to manage small businesses, I think that folks would be better off taking a one-day course in accounting and learning just enough to use it in accountant mode.

You don't have to be a CPA, just literally enough about A = L + E to follow the flow within Quickbooks and record one side of each entry.