[spooky69]

Howdy there, folks. Like many of you, I redeemed the HOLIDAYGIFT promo code and got 50 dollars of credit in the Connect store that are set to expire after March 31st. I was able to spend most of the credit, but still have $18 left and could use some suggestions as to what would be the best use for it. I also have ~60 free classic titles left, though I'm not sure if these are set to drift just out of my grasp as there is no expiration date listed next to this credit (maybe somebody could clear up whether I need to get pickin', as I remember that these were originally offered up with the same expiration date).
Anyway, I figured I could post a few ideas of what kind of book(s) I'm looking to use my credit on and hope that some astute reader out there could offer up a perfect suggestion or two for something that they bought and enjoyed from the Connect store (or that they know is available). I'd also encourage anybody else who used the same promo code to post here if they also have some cash left over and aren't sure how to use it. With all that out of the way, here is what I would hope to spend my precious $18 on:

-Non-fiction
-Engaging, stimulating, might just leave me a better person
-Has something that I can't get from a plain text version. Something with lots of diagrams/illustrations would be ideal since I can get a most well-known books without for free.
-Would be nice if I could get more than one book with that $18, but if you know of a real killer that's $15 then lay it on me

So those are my relatively specific (though entirely flexible) guidelines for how I'd like to greedily squeeze the most out of my free book money. Please throw out anything that you'd think I'd like, including any must-haves from the classics (these don't have to be non-fiction, though it's slightly preferable). Thanks for taking the time to think about my request, and I once again encourage anybody else who doesn't know how to spend their gift code money to throw out some ideas about what they're looking for.

-Crezallius