I haven't done it-- but if you click on the New book link here on Spark, and then click on the order link-- there's a link for Amazon. The "redeem" part is a form you fill out here on Spark that includes where you ordered it from, order # etc. So it looks like ordering from Amazon is okay.
It sounds like a great deal-- I'm in maintenance now so idk how much it would help me.... I think if I was still trying to lose I'd order the book for sure, the bonus stuff sounds like a fabulous deal. I may end up ordering it anyway-- I've been working hard at exercise for a month now and could really use a reward!! And maintenance is not much different, you just get more calories. You still need to make them healthy choices.
Edited to add: And of course, any book or information or whatever, only works if you actually apply what you learn. I read the Spark and I have the Cookbook. But you have to use the information, to get the real benefits. ; )
Edited by: MISSRUTH at: 3/29/2013 (09:05)