I stumbled across this site. If anybody wants to risk twenty bucks, you might give it a try. (I've already got credit in Spanish 101, thank you very much, I used to teach it as a matter of fact). I thought the examples of Mnemonics they gave were pretty lame, but the section about cognates was right on. Disclaimer: I've never seen this course until a few minutes ago, didn't order it (only read the 'free samples' that are in the link I posted) and DON'T have any financial interest in the company and can NOT vouch for their honesty. But for what it's worth (twenty bucks), here it is:
http://www.how-to-speak.com/?hop=las2133dk
