I also just found this Tutorial again by searching around on the web. I highly recommend it.
I noticed in the notes, that he based it off the same Simplicity 4450 I used with a bit of alternations. (I got it when the pattern first came out.)
The only thing I wish is that it talked about how to do the measurements. Well, actually, correction it does give you some starting points and reference links for it, but the reference link (the crazy old wizard one) was taken down.
To help, and I am not sure how you guys feel about this, but I personally recommend this thread, for help with measurements and geometry:
It was also suggested to me, that you can try to trace one of you favorite, non-stretchy shirts, to get an idea on your size.