I found this to be a very useful, extremely basic (read oversimplistic) account. However, it would be very helpful to start out with single entry vs double entry and accrual vs cash basis (which makes the income statement vs statement of cash flows make a lot more sense).

Of course some fundamental ideas (debits vs credits) are complicated enough to explain that most who try are just confused and confuse the reader.

Disclaimer: I write accounting software (LedgerSMB) so pretty sure I am a geek who has a decent working knowledge of finances or maybe even a accounting geek.